maybe even listen. It clipped at 400Wpc into 8 ohms (26dBW, fig.4) and at 620Wpc into 4 ohms (24.9dBW, fig.5). Parasound's website lists the dimensions as 17-5/8 inches wide, 7-3/4 inches high, and 20 inches deep. with a 2.2 kVA transformer and 164,000uF power supply, I think it's safe to Each of the Halo's 18 flat-pack output devices stands on a 0.1 ohm emitter resistor; the DC voltage drop across these resistors was 15mV in the high-bias condition. The reasons for this decision were based on several different factors; I've owned a Parasound A21 for near three years now, also own a Parasound JC3+ and a Parasound 2125 amp in my shop driving 2 channel there. The A21 was / is driving notoriously tough to get right / drive Yamaha NS-2000's. Bryston 3B3 is high on my list, but considerably more expensive. impractical, and unlikely this should be of little concern to most users. The A 21 is built to the strict quality and performance standards set by Parasound. Regarding tube life, many tube amp users seem to enjoy tube "rolling", so they may well end up changing tubes before they actually need replacing. The only problem that I had was with an AHB2 with the Monitor Audio Silver 8s in my CT system and I have not tried them with the monoblocs. While overall you appeared to be impressed with the AHB2, you reported that it did not mate well with certain speakers. The Parasound A 21+ offers a lot of low-distortion power and isn't fazed by impedances as low as 2 ohms.—John Atkinson. Fig.8 Parasound A21+, spectrum of 50Hz sinewave, DC–1kHz, at 100W into 8 ohms (left channel blue, right red, linear frequency scale). Add to Compare. Manufacturer ... Power measurement are at 120 VAC: 0.1% THD, RMS continuous power, full audio band (20 Hz - 20 kHz) Current Capacity 60 amps peak, per channel. Parasound design consultant John Curl has been a legend among audiophiles and electronic engineers for decades. Notice that the linearity remains even that the pair would have "fuller/richer mids" than the F228Be with the M22. We appreciate you taking the time to read these instructions and thank you for selecting Parasound for your listening pleasure. Yderligere information Farve: Sort, Sølv. (These figures include the series impedance of 6' of loudspeaker cable.) I will have to take a gander at my local dealer. eBay See price. true 400 watts/ch into 4 ohms continuously, would require a power transformer purr1n, Jan 17, 2017 #41. it. Note: Measurements can be found through this link. Parasound Halo A21+ mängd. you listed it as one of the upgrades made in your article, but did not notice it in person. The Parasound's voltage gain into 8 ohms measured 29.2dB from the balanced inputs, 29.4dB from the unbalanced inputs. They Ears validate the measurements, not the other way. purr1n, Jan 18, 2017 #3. Additionally, Parasound’s A21 just won an Editors’ Choice Award in the March 2019 issue of The Absolute Sound magazine, which calls it “an excellent Class AB stereo transistor amp, designed by the redoubtable John Curl.” Conclusion: “The A21 offers a lot of power at an affordable price.” Impressive Performance Upgrades. I no longer have the Revel Performa F228Be but I bought a pair of the Revel Performa3 F206 speakers for surround channels, primarily. Currently paired with the NAD M22 and the sound is excellent, but wondering if it can be improved within the same approx proce range (say $3k-$4k). This is a natural for my short-list, with this amp joining the AHB2, the Rogue ST-100 and the Belles 150a Reference 2, among others. They currently have the 3b3 on sale for $5215.50 while the A21+ is $2995. I wonder if Benchmark found that there is a limit to the power supply design or if they found there was a cost limitation in building a more powerful supply section? Logged MichiganMike. If you're trying to be non-sexist or non gender-specific, "they" or "their" will work fine, as in: "Someone has left their phone in the break room. Many thanks for your thoughts regarding the ABH2. The Movies I Own Samsung UE65KS8000, Marantz AV7703, 2x Nakamichi AVP1 power amps, PMC TB2i l&r, PMC TB2M … Parasound seems to have attended to every aspect of their design including the Stereophile has also reviewed the PS Audio Stellar M700. Is it that much better? during maximum unclipped power output into 8 ohm and 4 ohm loads indicting that will deliver marginally close to its rated power into 4 ohms. . Get the Audioholics AV Gear Guide Ebook FREE! The Parasound Halo A 21 and A I'm sure this is a wonderful amplifier, and I know there are significant differences in speakers' quality, but I never see A/B tests among amps (like Revel does with their speakers). Audioholics.com note: I read with interest your previous review of the AHB2 amp. Contributor Banned. with. Do two AHB2 amps drive such speakers significantly better than a single AHB2? haha. Parasound Halo A21+ Two Channel Amplifier Description The outgoing Parasound Halo A21 is the latest two channel power amplifier in the HALO series to get updated. Bridged/mono power rating is 750W into either 8Ω or 4Ω. from audible noise and distortion makes it a true winner! in certain areas, be aware that the value factor is most likely the culprit. The unbalanced input impedance was 46k ohms at low and middle frequencies, 37k ohms at the top of the audioband. I would anticipate(!) I was able to measure about amp at +/- 3dB from 5Hz to 100kHz at 1 watt. The modulation of the amplifier's frequency response, due to the Ohm's law interaction between this source impedance and the impedance of our standard simulated loudspeaker, was therefore minuscule, at ±0.1dB (fig.1, gray trace). Fig.9 Parasound A21+, HF intermodulation spectrum, DC–24kHz, 19+20kHz at 50W peak into 8 ohms (linear frequency scale). about 65% larger than the one in the A 52. Good luck. Last edited: Aug 17, 2019. this amp doesn't suffer from slew induced distortion typical of lesser Although price isn’t indicative of which would be better, a 3b3 for only $400 more than the A21+ sounds like a better deal. Other Audioholics reviewers may rate products solely based on performance, to buy a pair without audition, I would mate the A21+ with the f228Be. features allowing the amplifiers to be configured for almost any installation. Fig.4 Parasound A21+, distortion (%) vs 1kHz continuous output power into 8 ohms. I too struggled to get the sound quality that reviews (Thanks Kal) suggested. Vi hjälper dig gärna. I do not have any experience with demo CDs "that you might find at a band's merch table" but it is possible they are comparable. Joined: Jan 17, 2017 Likes Received: 230 Dislikes Received: 118 Trophy Points: 43 Location: Northern Region, FL. Specifikationer. @zerodeefex warned me about the Parasound amps. The sister site has Hi-Fi News used to have other measurements for the AHB2 amp that showed the amps performance under dynamic conditions vs. continuous conditions. As you can see, the A 51 maintains + 0.2 / -0.36 dB Thank you so much for the hand. "", https://www.stereophile.com/content/rogue-audio-stereo-100-power-amplifier, http://www.rogueaudio.com/Products_100.htm. The response into an 8 ohm resistive load (fig.1, blue and red traces) was flat to almost 20kHz, which correlates with the A 21+'s superb reproduction of a 10kHz squarewave (fig.2). The Benchmark HPA4 preamp, the sister to the LA4, is fantastic on every level and I am so grateful for the review which led to my satisfied purchase! and each reviewer has his/her own system for ratings. Parasound HALO A21 - 2 Channel Power Amplifier. Greater overall capacity with the monos, obviously. "The Parasound Halo A 21 and A 51 are top rate amplifiers at a great value. Does it qualify as Hi-Fi? I actually purchased my A21+ from them. I found this out during a visit to Ultra Fidelis in Milwaukee this last week. They have many useful features allowing the amplifiers to be configured for almost any installation. I am very happy with my system comprising the above and TEAC NT-505 (Network Player/DAC/Pre-Amplifier). The amplifier preserved absolute polarity (ie, was noninverting) with both balanced and unbalanced input signals and with the right channel used as the input in bridged-mono mode, with the outputs taken from the two positive loudspeaker terminals as described in the manual. roughly equal to: Performance × Price Factor/Value = Rating. If you happen to be searching for a 7 channel amplifier then we "Unless an amp designer imposes her will ... ", I'm not certain that I've ever read a review in Stereophile mentioning a female amp designer, though they must exist. I tested the Parasound Halo A 21+ with my Audio Precision SYS2722 system (see the January 2008 "As We See It"). Recently purchased the f228be based partially on your excellent review. M22 is very good, but sometimes I feel like the Revels have a little more potential, at least based on what I've read in reviews. I liked, on the A21 that I measured, a good suppression of mains line components. I am running on a pair of Focal Aria 926 but plan on upgrading to a set of Paradigm Persona 3f's as soon as finances allow. Likewise, if your only 250 watts into an 8 ohm load and about 400 watts into a 4 ohm load across the In order to do a Tell me if I'm wrong... How much does my sound "suffer" by using a $2000 Marantz integrated amp/receiver or an Emotiva amp? Again, the levels of the distortion harmonics didn't rise when I kept the output voltage the same but reduced the load impedance to 4 ohms. We ran 1 kHz, 5 kHz and 10 kHz square wave Shipping to United Kingdom. individual cost of each unit, thus giving a rating Selected the A21+ based on Kal’s review of the F228Be’s. Maybe larger soundstage, fuller/richer mids. Measured with the unbalanced inputs shorted to ground, the amplifier's unweighted, wideband signal/noise ratio was 78.1dB ref. their comparable price range. I don’t know where you are located but AudioAdvisor is a US online dealer for both Bryston and Parasound. See details. The linearity of this equipment doing the duty it is designed for. induced distortion. PARASOUND A21 high end stereo amplifier 2x400W (4 . Which one would you recommend? The Parasound A21+ can be used to stunning effect with the Parasound range of pre-amplifiers such as the JC2 BP, JC3+, the new improved P6 or the larger and flexible P7. Parasound Halo Series A 21 power amplifier presents the latest advancements in amplifier technology. At the end of this time, the side-mounted heatsinks were very hot, at 162.8°F (72.7°C). Parasound Products was founded in 1981, in San Francisco, by Richard Schram, whose mission was to provide value for the money to his customers. dealing with sound reinforcement applications may thirst for more power, but at 1 watt and full power. It would be neat to understand what it's doing under various loads, as it could speak to a bit to the prospect of Class H or G amplification from an industry-wide standpoint, namely regarding the advent digital power supply. Benchmark AHB2 - differences between stereo amp and two monos. I am considering the following Power Amps to drive my Monitor Audio PL300ii. Tilføj til kurv. Like it's bigger brothers - it can be used in tandem with the A51 to bolster a 7 or 9 channel home cinema system, or be a stand-alone high end two channel amplifier also - or a combination of both. Oh, one other thing- Regarding the Audio Research MP-1: The IC's that are in the unit can be replaced with more modern ones for much less hiss and self-noise. However, I would not hesitate to put them up against other amplifiers in I am down to two amplifiers either a Parasound Halo 21+ or a Bryston 3b3. I have been an owner of Parasound amps since the early 2000's with an HCA 2003a then moved to an A21 and as of last weekend a Jc5 , its been quite a journey with these fantastic amps with each taking my journey to the next level. Greetings, excellent review. None of these sounded nearly as good as the SR. TEAC connects to the A21+ using a set of AudioQuest Earth XLR cables. Parasound a21 high end stereo amplifier 2x400w (4. When I click on the link, that connects me to your review of F228Be ...... You can try clicking on the link :-) ...... Aha! Another amp which could also be considered ......... AudioControl Avalon G4 ($2,200), favorably reviewed by TJN for S&V magazine ....... 2, 3 or 4 channels, 600 WPC 8 Ohms, 2 channels :-) ........ ... (for $999 each) and still have money left over? Using our definition of clipping, which is when the output's percentage of THD+noise reaches 1%, the Parasound easily exceeded its specified powers with both channels driven with a 1kHz signal. Dunno. It's difficult to audition amps. « Reply #12 on: 26 Mar 2012, 01:26 pm » I have a Parasound A21 amp used with the Parasound C2 controller. This test shows demonstrates Well, sometimes the measurements keep us honest. "Doing so has proved that extremely high performance-per-dollar is still possible today when a company leverages decades of experience, and is spearheaded by a legend." Fig.3 Parasound A21+, spectrum of 1kHz sinewave, DC–1kHz, at 1W into 8 ohms (left channel blue, right red, linear frequency scale). ...a larger (apparent) soundstage, then try a tube amp. Notify me before the end of the auction. He owned an A21, the better more powerful version of this amp. 1 1 P. pacman9270 Enthusiast. I can order them online and return the one's I don't like, but that gets tedious. (One can still search for the original re-printed review though.) I know you don't want to talk about the Parasound A23 and the Freya, is there … Member; Posts: 156 » Gallery; Re: Parasound A21 and P3. × Beskrivning Brands Mer information Recensioner 0; Beskrivning. One can pop the feet off and use the supplied mounting kit to secure the A21+ into a standard 19 inch wide audio rack where the mounting height will be four rack spaces. Parasound A 21 Design Overview sections in the back of the manual. Fig.5 Parasound A21+, distortion (%) vs 1kHz continuous output power into 4 ohms. The measurements are generally very similar to mine performed on the older A21. The ratings indicated below are based on subjective listening and objective testing https://www.audioadvisor.com/prodinfo.asp?number=PAC2250V2. Ears validate the measurements, not the other way. Big D Design I've got stereo junk in my trunk. It would be good to have an empirical test of your most reasonable hypothesis. - Cambridge Audio Azur 851W. I hadn't noticed any change. If you say so. Using the Parasound amp allowed my speakers to portray every aspect that I had come to expect without adding any noticeable sign of distortion or flaw." I had also tried several other USB cables such as AudioQuest Carbon and Diamond and Kimber Kable CU. https://parasound.com/a23+.php. When the amplifier drove an equal mix of 19 and 20kHz tones at 50W into 8 ohms (fig.9), the second-order difference product at 1kHz lay at a very low –86dB (0.005%), and higher-order intermodulation products were even lower in level. It impeccable especially via balanced connections and although I did not have Parasound Halo A21+ Two Channel Amplifier now at Analogue Seduction. If you notice better performing products in future reviews that have lower numbers That's all I can offer (with included qualifications). Everything about it screams "End-game tube amp, long-term keeper! The Fig.1 Parasound A21+, frequency response at 2.83V into: simulated loudspeaker load (gray), 8 ohms (left channel blue, right red), 4 ohms (left cyan, right magenta), 2 ohms (green) (1dB/vertical div.). Parasound specifies the A 21+ as delivering 300W into 8 ohms (24.8dBW) with both channels driven and 500W into 4 ohms (24dBW). They have performed the modification in the past for customers as well. Fig.2 Parasound A21+, small-signal 10kHz squarewave into 8 ohms. I'm still getting use to the Jc5 as its more amp than I expected in terms of its capabilities but will say it will be with me for years to come. The Parasound Halo A21+ two amplifier is a 300 watt per channel power amplifier that replaces the legendary A21. excellent build quality internally and externally matched with great looks. constraints or probably due to their desire to optimize performance without Parasound Halo A21+ Stereo Power Amplifier B-Stock Full Warranty Changes from the original A 21→A 21+ 250 → 300 Watts (8Ω) 400 → 500 Watts (4Ω) 7... View full details Original price $2,995.00 If I was forced(!) How does it compare with the Parasound 21+. any speaker load in even the most demanding home theater systems. Does this indicate some bias disbalance between two channels? ), something the A21+ above avoids completely, due to its far greater power capabilities. I tried to tell my wife I was gold/silver color blind but it didn't work. Parasound seems to have attended to every aspect of their design including the excellent build quality internally and externally matched with great looks." I purchased a Marantz receiver to drive my purchased Revels and it sounded wonderful. The Parasound A 51 amplifier is more than capable of driving Frequency Response 5 Hz - 100 kHz, +0/-3 dB 20 Hz - 20 kHz, +0/-0.25 dB. - Anthem MCA225 Gen2 Recently sold a P5. Perhaps its one of those things that looks great in pictures, but doesn't amount to much in reality. Parasound specifies the A 21+ as delivering 300W into 8 ohms (24.8dBW) with both channels driven and 500W into 4 ohms (24dBW). Parasound Halo A23+ Two Channel Amplifier. The top panel was also hot, at 116°F (46.7.1°C). Parasound tries to create extremely solid designs that last for years as opposed to updates and tweaks every year. Both will do what they are designed to do amplify the volume. There is no headroom with the amp whatsoever, but it still does 200Wpc into 4 ohms, and the monoblocks close to 500Wpc. Well, sometimes the measurements keep us honest. If you run into difficulties, the Troubleshooting Guide should help you quickly remedy the problem. I cannot quantify "better" but I would not settle for the Emotiva even at a fraction of the AHB2 or the Parasound. Fig.3 Parasound A21+, spectrum of 1kHz sinewave, DC–1kHz, at 1W into 8 ohms (left channel blue, right red, linear frequency scale). They can claim it at the front desk.". This is evident by the JC 1 mono amplifier serving as a base and inspiration for the JC 5. They have many useful The Benchmarks live in the city where, so far, they have not disappointed. A Parasound NewClassic 2250 2 channel and a Parasound NewClassic 5250 5 channel were replaced with a Parasound Halo A21 and Parasound A52+ respectively. You personally. Because the Marantz was overheating, I purchased the Emotiva and couldn't tell the difference between the 3 amplifiers; all wonderful. In his review of the ($3,495) Rogue Audio Stereo 100 power amp, HR stated that the amp in triode mode "delivered bigger, deeper, more CinemaScope soundstages populated with denser, more vivid three-dimensional aural images" and "in my view, the Stereo 100 is everything—sonically, mechanically, aesthetically—that we could hope for in a 21st-century tube amp. The balanced input impedance was high at 90k ohms at 20Hz and 1kHz, dropping to a still-high 84k ohms at 20kHz. Any dealer that's willing to send me the Parasound for comparison, I will gladly purchase it if it's superior! hold the line voltage constant and have at least a 20A dedicated line to power Copyright © 1998–2020 Audioholics, LLC. I mention this not to take away from the Parasound, but to help people mystified or susceptible to the charms of high priced audio equipment. I also read elsewhere that if the amp sees tough loads with large voltage swings, there will be issues with amp coping (perhaps the reason Herb's review of the amp with the RAAL headspeakers was unenjoyable? The THD+N was very low in the midrange into 8, 4, and 2 ohms (fig.6) but rose at higher frequencies. Thanks, Great review. The new variant A21+ now has been developed with enhancements (both cosmetic and more fundamentally - internally) by the dedicated team at Parasound, to ensure that where necessary the natural development of benefits can be added … When I had an Emotiva (https://www.stereophile.com/content/music-round-51), it did not satisfy me. However, it seems to me that regarding measurements the A21+, according to Stereophile plots, is a step back. I see that you have been using two AHB2 amps in mono. So trying to validate with opinions I feel are reliable. the frequency response linearity of the power amplifier within the audible range Hi KR , the link provided for Revel Performa3 F206 in the associated equipment listing, is actually for Revel Performa F228Be :-) ....... Nope. 51 amplifiers are top rate amplifiers at a great value. I suspect that you have put your finger on the reason for these mismatches. But in the article you linked, this is a direct quote... " Still, for $899. See price £ 2 599. eBay. . Fig.7 Parasound A21+, 1kHz waveform at 25W into 8 ohms, 0.01% THD+N (top); distortion and noise waveform with fundamental notched out (bottom, not to scale). I measured approx. of the product in question. Additionally, Parasound's A21 just won an … However, given the fact that the A 52 is endowed thekingbeyond Well-known Member. The less powerful Bryston 2b3 is on sale for $3865.50 which still more than $400 than the A21+. Mar 11, 2017 #3 It was sold as faulty . I wish Hi-Fi News still had their old reports and reviews in a different subsection of the website as archives. All Rights Reserved. numbers are weighed heavily with respect to the Similar specs wattage-wise to the A21 at 270W into 8 ohms. A slight 0.35dB channel imbalance in favor of the left channel (blue and cyan traces) can be seen in fig.1, even though the level controls for the two channels had both been set to their maximum positions. As Parasound defines it, value begins to decline when additional cost provides only marginal and diminishing returns, and increases when a product is reliably functional over decades. In bridged-mono mode, the gain was 34.9dB into 8 ohms. Frågor? voltage sagged from 116VAC to 112VAC. Which one to you keep connected to the speakers, and why ? designs. Similar power and price. Does it mean unprocessed like a demo CD that you might find at a band's merch table? Does Mr Rubinson hint that the differences are minute with the line "the performance of modern amplifiers should and does converge?" No discrepancy. The shape of the traces in figs.4 and 5 suggested that I examine how the percentage of THD+noise changed with frequency at 20V, which is equivalent to 50W into 8 ohms, 100W into 4 ohms, and 200W into 2 ohms. Joined: Oct 12, 2015 Likes Received: 2,729 … I have not had an integrated amp or AVR in house in a very long time. Me, personally? Fig.6 Parasound A21+, THD+N (%) vs frequency at 20V into: 8 ohms (left channel blue, right red), 4 ohms (left cyan, right magenta) 2 ohms (left gray). I cannot fix that but I will notify someone who can. amplifier is excellent at any power level it is operating in, and its freedom Hi all, I can see that the left channel of my Halo A21 goes slightly warmer than the right one - difference not too prominent, but still detectable even by a naked hand. After auditioning several amps both recently and over the years I decided to stay with the Parasound brand but jump into their Halo Series. assume this amp will deliver its rated power into all channels at 8 ohms. "Parasound has chosen to take a staple core product that has remained an exceptional value for over fifteen years, the Halo A21 amplifier, and re-spin it into the Halo A21+," reports Michael Zisserson at positive-feedback.com. The Parasound Halo A 21 and A 51 amplifiers are top rate amplifiers at a great value. The scoring below is based on each piece of After many years I'm getting back into quality audio. Last week, a well kept, maintained Accuphase P-500L showed up at my doorstep. The amp does put out exponentially greater distortion in 4, 2 or 1 ohms (vs 8 ohms), the fact that it is well under .01% still (vs. 0005%) makes it a non-issue. Parasound seems to have attended to every aspect of their design including the excellent build quality internally and externally matched with great looks. from 20 Hz to 20 kHz which is excellent. Since a continuous all channels driven scenario is both unrealistic, as you will not be disappointed in your investment. Jr. But by the time he warned me, it was already a week to late. Amp - Parasound Halo A21, CD - Marantz CD5001, Speakers - B&W 804S, DAC - Audiolab MDac with Lakewest Toy Upgrade, TV - Samsung UE46D7000, Streamer - Sonos ZP90, 2xZP120, Play5 & Play3. “Let our rigorous testing and reviews be your guidelines to A/V equipment – not marketing slogans”. I'd like to see this design implemented over Class D any day... ... (and one-third the price) Parasound NewClassic 2250 v.2, which has a 2-channel power rating of 275W into 8Ω and 400W into either 4Ω or 2Ω. Well, it would have to be hypothetically because, although I have used most of these these components before (not the A21), I have not used any two of them at the same time or A/B. Still, the Parasound came surprisingly close to the Ref 210’s neutral tonal balance and to the MBL’s highly nuanced dynamic palette. Just curious what you mean by "the dynamics are demo-quality". Boasting classic circuit designs by renowned engineer John Curl and prices that range from just under $1000 to a few … and thank you for the comparisons of the Halo A21+ with the Benchmark AHB2, as I am in the market for a power amp directly in this price segment. Parasound wisely decided not It all depends where you have to spend your money. So the A21+ is a real all rounder for want of a better phrase, but don't let this deftness fool you in any way shape or form. (With a class-AB output stage, one-third power results in the maximum dissipation in the output devices.) such a powerful amplifier. Question, let's say you have the Revel f228be and laying around the house you also have the NAD M22, Parasound A21 and the Parasound A21+. DescriptionParasound’s new Halo A 23+ power amplifier is the new successor to the highly regarded A2.. £2,019.00 . to combine their amplifiers into 7-channels perhaps due to size and weight In their eyes, that’s just a bad and rushed design. requirement is for two channel stereo, then the Halo A 21 amplifier will satiate If this amp is 10% "better," that number is not worth testing the waters of diminishing returns. had the ability to control my speakers to the point where the soundstage was The second harmonic lies at –74dB in this graph and didn't rise in level with a 4 ohm load. Thanks, may be more boxes than I'd like to deal with. The bass could be more impactful with A 21+ ....... Also, with tubes, you have to change them after certain hours of playing music :-) ....... ... combination such as a Rogue Atlas Magnum II tube amp and a Parasound Halo A23+ solid-state amp, and still be just under the $4K budget limit stated by tlathbury. suggest combining the Parasound Halo A 51 with the accompanying A 21 amplifier Parasound Halo A21+ antal. That one is the XPA-2 both 1st gen. Parasound has been around a lot longer than Emotiva. Page 1 A 21 Amplifier Owner’s Guide...; Page 2 If you’re eager to get up and running right away, simply follow the basic step-by-step instructions to connect and operate the A 21. Slew Rate > 130 volts per microsecond. Lägg i varukorg. So in my situation (solid state preamp Yamaha CXA5200) which amp would you recommend, the Bryston or the Parasound for absolute sound quality. I tested a Revel set up (2.0) with a MacIntosh amplification at the dealers and it sounded wonderful. Excellent working order - a few scratches and scrapes on the front and top as per the photos, but doesn't affect the performance. Without having a VARIAC to hold the line Halo A 21 Amplifier Measurements & Conclusion. http://rogueaudio.com/Products_Atlas_Magnum.htm Parasound Halo A21+ Two Channel Amplifier. I have seen glowing reviews of the AHB2 amp for the most part but in a small number of cases there seems to be mismatches with specific loudspeakers and headphones. well done. tests at 1 watt into 8 ohms and found no excessive overshoot or ringing or slew There's no where I can go to listen to all the different amp options with a specific speaker model. He tried the Classe amplifier which is a class D like the NAD and found the other 2 amps to be better match with the F228Be so I decided to go with the new Parasound. The final change that really brought my system to meet my and wife’s expectations was a Synergistic Research Atmosphere X USB cable which connects my MacBook Pro to the TEAC. Confused about what AV Gear to buy or how to set it up? compromise. These will be due to magnetic interference from the massive toroidal power transformer and were a little higher in the left channel (blue trace) than the right (red). Parasound … your stereo digital and analog appetite. Their stuff used to look low-rent with the separate endcaps and folded metal faceplate, but adding the gold strip gives a purpose to the endcaps and a nice sense of detail to the face. I have not heard/used the M22 v2. Food for thought? NAD M22 is a pretty good, powerful amp ........ Why you want to change it? Interesting. Is that a problem? voltage constant, it is difficult to accurately measure all channels driven with Although Parasound’s Halo amplifiers have remained essentially unchanged for over a decade, they are still considered to offer outstanding value, even by today’s standards: reference-quality sound for budget prices. And would you be able to prove that you connected it so in a blind test, with a 38-page report and a dozen measurements (minimum) posted online? The A 21+'s distortion was predominantly the subjectively innocuous second harmonic (fig.7), and higher harmonics are all very low in level (fig.8). If this amp is 10% "better," that number is not worth testing the waters of diminishing returns. Than the A21+ is $ 2995 tube amp amount of real power the A21+ avoids. Desk. `` these are also very low in level fig.4 ) and also distortion seems me... Up at my doorstep reported that it did not notice it in person with opinions i feel reliable! A larger ( apparent ) soundstage, then try a tube amp long-term... Heck, forget that conditional: i am considering the following power amps to drive my purchased and. A21+ using a set of AudioQuest Earth XLR cables power results in city. Decision were based on each piece of equipment doing the duty it is designed for partially your... For this decision were based on performance, and the monoblocks close to 500Wpc owned an,... System comprising the above and TEAC NT-505 ( Network Player/DAC/Pre-Amplifier ) this test shows demonstrates frequency. Wife i was gold/silver color blind but it still does 200Wpc into 4 ohms far power! Fedex and applies his diligent attention to detail to his speaker and electronics here... `` ``, https: //www.stereophile.com/content/rogue-audio-stereo-100-power-amplifier, http: //www.rogueaudio.com/Products_100.htm curious what you mean by `` the are. But it did n't rise in level with a Parasound Halo 21+ or a Bryston 3b3 is on... Parasound Halo a 23+ power amplifier that replaces the legendary A21 low-distortion power and is n't fazed by as. Higher frequencies not disappointed price range but these are also very low 0.077 ohm at 20Hz and 1kHz, to! And 2 ohms ( average of both channels ), it did n't in! A21+, HF intermodulation spectrum, DC–24kHz, 19+20kHz at 50W peak into 8 ohms for an.... Performed the modification in the Halo ser.. £3,799.00 extremely solid designs that last for years opposed! Note: measurements can be found through this link amp........ why you want to change?! Merch table designed to do amplify the volume this ratio improving to 88.7dB when the measurement A-weighted! You quickly remedy the problem quote... `` still, for $ 899 tested a Revel set (. Marantz was overheating, i would not hesitate to put them up against other amplifiers in their,. Loudspeaker cable. these are also very low 0.077 ohm at 20Hz and 1kHz, increasingly slightly to 0.1 at! Is not worth testing the waters of diminishing returns at 90k ohms at the of. 3 amplifiers ; all wonderful to 500Wpc, small-signal 10kHz squarewave into 8 ohms ( fig.6 but! Performa F228Be but i will gladly purchase it if it 's superior ( fig.3.. Will notify parasound a21 measurements who can which still more than capable of driving any speaker load in the... S new Halo a 21 power amplifier in the Halo ser.. £3,799.00 channel amplifier now at Analogue Seduction 0.1. The Parasound brand but jump into their Halo Series a 21 and a Parasound 2250. Strip in the maximum dissipation in the Halo ser.. £3,799.00 Bryston 2b3 is sale... Recensioner 0 ; Beskrivning SR. TEAC connects to the A21+ above avoids completely, due to rated... Course this all assumes you hold the line `` the dynamics are demo-quality '' following power to... Amps in mono 3 it was sold as faulty wideband signal/noise ratio was 78.1dB ref,. Like with anything you get longevity or you get longevity or you get longevity or you issues. Thanks Kal ) suggested 2017 Likes Received: 230 Dislikes Received: Dislikes. Are based on performance, and 2 ohms ( linear frequency scale ) stage, one-third results! 2 channel and a Parasound NewClassic 2250 2 channel and a 51 maintains + 0.2 -0.36. As 2 ohms.—John Atkinson not worth testing the waters of diminishing returns level with a amplification. Fedex and applies his diligent attention to detail to his speaker and electronics here! Older A21 every aspect of their design including the excellent build quality internally externally! Into 8 ohms measured 29.2dB from the balanced inputs, 29.4dB from the balanced input impedance was at! For more power, but it did n't work you listed it as one the! Fig.6 ) but rose at higher frequencies 20 inches deep - Parasound,. Side-Mounted heatsinks were very hot, at 116°F ( 46.7.1°C ) John Curl has been legend. A52+ respectively ohm at 20kHz all assumes you hold the line `` the performance of modern amplifiers and! Shows demonstrates the frequency Response 5 Hz - 100 kHz, +0/-3 dB Hz. And Parasound A52+ respectively in mono rating is 750W into either 8Ω or 4Ω `` the dynamics are ''... The balanced input impedance was 46k ohms at 20kHz reviewer has his/her own system for ratings you! Using a $ 2000 Marantz integrated amp/receiver or an Emotiva ( https: )... 20Hz and 1kHz, increasingly slightly to 0.1 ohm at 20Hz and 1kHz, increasingly slightly to 0.1 at. New Halo a 23+ power amplifier is more than $ 400 more on the left 37... A Bryston 3b3 but i bought a pair of the F228Be and over the years i getting... Present in the midrange into 8 ohms for an hour one is the successor... For the amount of real power the A21+ with the amp whatsoever, that. A Bryston 3b3 A21 that i measured, a good suppression of mains line components Stereophile has also reviewed PS. Inches deep version of this amp '' by using a set of AudioQuest Earth XLR.... 2 channel and a 51 amplifier is the XPA-2 both 1st gen. Parasound has been legend. Rigorous testing and reviews in a very low in level with a MacIntosh at! Find at a great value folks dealing with sound reinforcement applications may thirst for more power but. N'T find any reviews the past for customers as well power capabilities price range parasound a21 measurements are reliable my.! Vs 37 grades on the reason for these mismatches great looks. impressed with the Parasound for comparison, will! Still-High 84k ohms at low and middle frequencies, 37k ohms at 20Hz and 1kHz, dropping a! Very happy with my system comprising the above and TEAC NT-505 ( Network Player/DAC/Pre-Amplifier ) modification. Doing the duty it is designed for like with anything you get longevity or you get.! 10Khz squarewave into 8 ohms measured 29.2dB from the balanced input impedance was 46k ohms at 20kHz spectrum! You keep connected to the A21 was / is driving notoriously tough to get right / drive NS-2000. What you mean by `` the Parasound 's A21 just won an the... Purchase it if it 's superior liked, on the Bryston better more powerful version this. Am greatly impressed with the Parasound a 21 is built to the strict and! Temperature about 26 grades ) a continuous all channels driven scenario is both unrealistic, impractical, unlikely. % `` better, '' that number is not worth testing the waters of diminishing returns Azur 851W and... Powerful version of this time, the side-mounted heatsinks were very hot, 116°F... Devices. folks dealing with sound reinforcement applications may thirst for more power but... Higher noise and distortion Benchmarks live in the maximum dissipation in the output devices. Curl has been legend! And 1kHz, dropping to a still-high 84k ohms at the top of the AHB2, you reported that did. Kal ’ s new Halo a 21 and a Parasound Halo Series a 21 is to! Still search for the original re-printed review though. the dealers and it sounded wonderful ( to my )... Amplification at the expense of higher noise and distortion customers as well direct quote... `` still, for 3865.50... Not had an integrated amp or AVR in house in a different of... Sound reinforcement applications may thirst for more power, but it still does 200Wpc 4. The manual sound `` suffer '' by using a set of AudioQuest Earth XLR cables where i can to... 2X400W ( 4 than i 'd like to deal with of mains line components peak. Is based on each piece of equipment doing the duty it is designed for ; all wonderful to. Spectrum, DC–24kHz, 19+20kHz at 50W peak into 8 ohms ( linear scale... On each piece of equipment doing the duty it is designed for am very happy with system. 2 channel and a 51 maintains + 0.2 / -0.36 dB from 20 Hz - 100,. Mer information Recensioner 0 ; Beskrivning tested a Revel set up ( ). Power into 8 ohms to set it up performance, and each reviewer has his/her own for... The SR. TEAC connects to the A21 was / is driving notoriously tough to get the sound quality reviews!, not the other way testing the waters of diminishing returns is no headroom the! It in person Azur 851W to updates and tweaks every year, due to its power... Let our rigorous testing and reviews be your guidelines to A/V equipment – not marketing slogans.! Nad M22 is a direct quote... `` still, for $ 3865.50 still... Hi-Fi News still had their old reports and reviews be your guidelines to A/V –... You reported that it did not mate well with certain speakers legend audiophiles. Strict quality and performance standards set by Parasound Beskrivning Brands Mer information Recensioner 0 ; Beskrivning noise. Made in your article, but it did not mate well with certain speakers demanding home systems...: //www.rogueaudio.com/Products_100.htm at the front desk. `` Gen2 - Cambridge Audio Azur 851W 's:! A52+ respectively taking the time to read these instructions and thank you for selecting for., 4, and unlikely this should be of little concern to most users a (.
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