You are correct. Just curious what you mean by "the dynamics are demo-quality". Sidebar 3: Measurements I tested the Parasound Halo A 21+ with my Audio Precision SYS2722 system (see the January 2008 "As We See It"). Channel separation was excellent, at >90dB in both directions below 2kHz, declining to a still-good 72dB at the top of the audioband. None of these sounded nearly as good as the SR. TEAC connects to the A21+ using a set of AudioQuest Earth XLR cables. Good luck. Because the Marantz was overheating, I purchased the Emotiva and couldn't tell the difference between the 3 amplifiers; all wonderful. Although price isn’t indicative of which would be better, a 3b3 for only $400 more than the A21+ sounds like a better deal. While overall you appeared to be impressed with the AHB2, you reported that it did not mate well with certain speakers. Parasound Halo A51 Amplifiers user reviews : 5 out of 5 - 3 reviews - audioreview.com. Does it mean unprocessed like a demo CD that you might find at a band's merch table? 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). Description Since 1981, Richard Schram, founder and CEO of Parasound Products, Inc., has built the brand on making audio components that look and sound expensive, but sell for much less than it appears they should. There were also even-order harmonics of the power-line frequency present, but these are also very low in level. The Benchmarks live in the city where, so far, they have not disappointed. 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. This review is written just to show my appreciation of Halo A21, which has served my demands. 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. They take an analog voltage signal from the source, increase it, and back it up with enough current so that the output can power a relatively insensitive device, the loudspeaker. They currently have the 3b3 on sale for $5215.50 while the A21+ is $2995. Many thanks for your thoughts regarding the ABH2. With the e38 directly connected to the A 21+, there was no audible noise from the system unless my ear was practically touching the tweeter of one of the Revel Ultima Studio2 loudspeakers. 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. See my Parasound Halo P3 preamplifier review for comments on how the A23s work in a vertical bi-amp with the P3 and differences between the RCA and XLR inputs. heck, forget that conditional: I am greatly impressed with the Emotiva XPA-5.". The combo sounds excellent! I have not heard/used the M22 v2. I cannot fix that but I will notify someone who can. My original P3 that I bought in 2004 served me well over these few years until the first weekend in Feb. 08' when a transister burned out on the unit. Everything about it screams "End-game tube amp, long-term keeper! If the use of monoblocks resolves the reported mismatches, the $6K price of AHB2 monoblocks remain a good value given their transparency and power rating for driving such speakers. ), something the A21+ above avoids completely, due to its far greater power capabilities. Since I already have in house the new amp's three-channel sibling, the Parasound A 31, I was comfortable installing the A 21+ in my system using the same XLR input cables and speaker cables, the latter with locking banana pins. This is evident with the release of the new Parasound A 21+ stereo power amp ($3150), the successor to the A 21, which was originally launched in 2003. Thank you so much for the hand. Is it that much better? One could also consider bi-amping the F228Be speakers with a ... Good match with the Monitor Audio PL 300ii, PS Audio Stellar M1200 monoblock power amplifier, Classé Delta Mono monoblock power amplifier, Pass Laboratories Aleph 0 monoblock power amplifier, Parasound Halo JC 1+ monoblock power amplifier, darTZeel NHB-468 monoblock power amplifier, Accustic Arts Audio Mono II monoblock power amplifier, Dynaco Stereo 120 transistor power amplifier, Verity Audio Monsalvat Amp-60 power amplifier, Revinylization #13: Tone Poet, Analogue Productions, ERC reissues, Analog Corner #290: The Haniwa LP Playback System, Gramophone Dreams #44: Audio-Technica, Goldring, LP Gear phono cartridges, Cambridge Audio CXA81 integrated amplifier, Analog Corner # 305: Degritter record cleaner & Aidas Gala Gold LE cartridge, Acoustic Geometry Room treatments (before & after), My current and likely the last home audio setup, Fascinating wiev by Verity Audio Sarastro, Recommended Components: Fall 2020 Edition. 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. That's all I can offer (with included qualifications). 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? Looking at other measurements and reviews.... Now, may we please have a test of the non-Halo ... Why not simply buy two of the Parasound 2250 amps ... You say the Emotiva did not satisfy you??? Greater overall capacity with the monos, obviously. Thank you! 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. 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. "", https://www.stereophile.com/content/rogue-audio-stereo-100-power-amplifier, http://www.rogueaudio.com/Products_100.htm. • The same heavy-duty speaker terminals used in the JC 5 stereo power amp were added. The rear panel, flanked by sturdy rack handles, has a set of four of the easiest-to-use and most secure multiway speaker binding posts I've ever encountered. "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." Parasound Halo A23+ Two Channel Amplifier. 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 no longer have the Revel Performa F228Be but I bought a pair of the Revel Performa3 F206 speakers for surround channels, primarily. "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. - Parasound A21+ "", https://www.stereophile.com/content/rogue-audio-stereo-100-power-amplifier, http://www.rogueaudio.com/Products_100.htm. I purchased a Marantz receiver to drive my purchased Revels and it sounded wonderful. well done. Fig.1 was taken with the balanced inputs; the response with the unbalanced input was identical, though in bridged-mono mode, the output at 20kHz was down by a still-trivial 0.25dB, due to the doubling of the amplifier's output impedance in this mode. I hadn't noticed any change. Stereophile has also reviewed the PS Audio Stellar M700. If this amp is 10% "better," that number is not worth testing the waters of diminishing returns. Does Mr Rubinson hint that the differences are minute with the line "the performance of modern amplifiers should and does converge?" The Parasound's output impedance was a very low 0.077 ohm at 20Hz and 1kHz, increasingly slightly to 0.1 ohm at 20kHz. It's difficult to audition amps. Greetings, excellent review. and will be running all of this through Thiel CS2 speakers. Moves the sound though the system with ease, power and fluid control. 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. that the pair would have "fuller/richer mids" than the F228Be with the M22. If this amp is 10% "better," that number is not worth testing the waters of diminishing returns. 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). Measured with the unbalanced inputs shorted to ground, the amplifier's unweighted, wideband signal/noise ratio was 78.1dB ref. ... Parasound A21+ Amplifier . Greater overall capacity with the monos, obviously. I tried to tell my wife I was gold/silver color blind but it didn't work. • The automatic turn-on circuit was improved. They currently have the 3b3 on sale for $5215.50 while the A21+ is $2995. I don’t know where you are located but AudioAdvisor is a US online dealer for both Bryston and Parasound. I would anticipate(!) The Benchmarks live in the city where, so far, they have not disappointed. You personally. This is a review and detailed measurements of Parasound Zdac v.2 DAC and headphone amplifier. to buy a pair without audition, I would mate the A21+ with the f228Be. I actually purchased my A21+ from them. There's no where I can go to listen to all the different amp options with a specific speaker model. 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). http://rogueaudio.com/Products_Atlas_Magnum.htm . 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. I too struggled to get the sound quality that reviews (Thanks Kal) suggested. 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). "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. FS: Parasound Halo P5 2.1 Preamp w/ DAC , Yamaha C-4 Vintage Preamp: Audio Equipment For Sale: 0: Nov 28, 2020: P: Should I add a DAC for Node2i + Parasound A21 + KEF LS50 setup? I will have to take a gander at my local dealer. The THD+N was very low in the midrange into 8, 4, and 2 ohms (fig.6) but rose at higher frequencies. I can order them online and return the one's I don't like, but that gets tedious. That … Parasound Halo Integrated review: if you’re after one do-it-all amp, there are few better alternatives. There is no headroom with the amp whatsoever, but it still does 200Wpc into 4 ohms, and the monoblocks close to 500Wpc. Overall Rating: 5/5 Stars - Ken Stein and Steve Dellasala Luister (Netherlands), November 2003 At first I replaced the power amp to your same Parasound A21. 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. 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. After many years I'm getting back into quality audio. Parasound needs to promote the designer that put the gold trim strip in the faceplate. Stereophile has also reviewed the PS Audio Stellar M700. The less powerful Bryston 2b3 is on sale for $3865.50 which still more than $400 than the A21+. Any dealer that's willing to send me the Parasound for comparison, I will gladly purchase it if it's superior! Parasound Halo A23 Stereo Amplifier Review In light of our slow shift toward two channel audio (no, we are not abandoning personal audio), I decided it would be a good idea to start with something basic, like a stereo amplifier. NAD M22 is a pretty good, powerful amp ........ Why you want to change it? ...a larger (apparent) soundstage, then try a tube amp. 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. In 1988, Schram enlisted the services of circuit designer John Curl, and he brought along designers Carl Thompson and the late Bob Crump, forming a team whose work resulted in the development of Parasound's flagship Halo line. I liked, on the A21 that I measured, a good suppression of mains line components. The butterfly grips on the speaker terminals enticed me to try them, too, and, with them, hand tightening was easy and impressively secure. I currently own 4 x parasound amplifiers, a21, a31, a23 x2. 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. When I had an Emotiva (https://www.stereophile.com/content/music-round-51), it did not satisfy me. Parasound at Rocky Mountain AudioFest 2017 - Stereophile review by Herb Reichert. 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. Allright fellas, with your help, I've narrowed it down to either the Vincent sp-331, or the Parasound a21. Item: Parasound Halo A23 2 channel Power Amp Location: S/E Suburbs I can post as I have original packaging Price: $900 Item Condition: It is as good as new purchased November 2017 Reason for selling: I now have whatmough Signature 33s and these need more power I have decided. I wish Hi-Fi News still had their old reports and reviews in a different subsection of the website as archives. I am considering the following Power Amps to drive my Monitor Audio PL300ii. Listening to the A 21+ The balanced input impedance was high at 90k ohms at 20Hz and 1kHz, dropping to a still-high 84k ohms at 20kHz. Dunno. With the insertion of the somewhat noisier MP1 and the attendant lower gain setting on the A 21+, I could hear the hiss as far away as 4"! (One can still search for the original re-printed review though.) 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! Which one would you recommend? Bridged/mono power rating is 750W into either 8Ω or 4Ω. I suspect that you have put your finger on the reason for these mismatches. According to Parasound, the 3 o'clock setting means 20dB/26dB and the 12 o'clock setting means 10dB/16dB for single-ended/ balanced inputs, respectively. I preconditioned the amplifier by operating it at one-third the specified power into 8 ohms for an hour. maybe even listen. I had also tried several other USB cables such as AudioQuest Carbon and Diamond and Kimber Kable CU. If I was forced(!) 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. Benchmark AHB2 - differences between stereo amp and two monos. The top panel was also hot, at 116°F (46.7.1°C). Thanks, looks interesting...can't find any reviews. Which one would you recommend? 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. The unbalanced input impedance was 46k ohms at low and middle frequencies, 37k ohms at the top of the audioband. They have performed the modification in the past for customers as well. But in the article you linked, this is a direct quote... " Still, for $899. Nonetheless, it is still very much a Curl design, with his customary J-FET input stage, MOSFET driver stage, and beta-matched bipolar-transistor output stage—each arrayed in a complementary configuration, making for a more linear and lower distortion circuit. Login / Register. 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). 4 Distinct Product Lines. Power hungry. to buy a pair without audition, I would mate the A21+ with the f228Be. https://www.audioadvisor.com/prodinfo.asp?number=PAC2250V2. 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. Me, personally? It would be good to have an empirical test of your most reasonable hypothesis. https://www.audioadvisor.com/prodinfo.asp?number=PAC2250V2. Similar power and price. Looking at other measurements and reviews.... Now, may we please have a test of the non-Halo ... Why not simply buy two of the Parasound 2250 amps ... You say the Emotiva did not satisfy you??? "The Parasound Halo A 21 and A 51 are top rate amplifiers at a great value. Parasound JC2 preamp $4495 - Stereophile Class A rated. Food for thought? 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.). Fig.8 Parasound A21+, spectrum of 50Hz sinewave, DC–1kHz, at 100W into 8 ohms (left channel blue, right red, linear frequency scale). • Partly as a consequence of the above, the amp got heavier: 71lb, compared to 60lb. Fig.3 Parasound A21+, spectrum of 1kHz sinewave, DC–1kHz, at 1W into 8 ohms (left channel blue, right red, linear frequency scale). Recently purchased the f228be based partially on your excellent review. 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. I cannot quantify "better" but I would not settle for the Emotiva even at a fraction of the AHB2 or the Parasound. 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. heck, forget that conditional: I am greatly impressed with the Emotiva XPA-5.". Called Parasound and their customer support was excellent! 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. I have not had an integrated amp or AVR in house in a very long time. What I really like are the brawny speaker terminals that you can tighten firmly without tools and, although not listed above, the modified rear-panel gain controls: On the A 21, the only calibration mark on each dual-mono gain control knob says "THX Reference." Also hot, at 162.8°F ( 72.7°C ) cable. but considerably more expensive Parasound A21+ Anthem... Back into quality Audio allright fellas, with your help, i will someone! In pictures, but did not notice it in person 3 reviews - audioreview.com silence. Are generally very similar to mine performed on the Bryston based partially on your excellent review i recently from. N'T fazed by impedances as low as 2 ohms.—John Atkinson this out during a to. Reviews in a very long time have put your finger on the DRs sound quality that reviews ( thanks ). None of these sounded nearly as good as the SR. TEAC connects to the speakers, and the close... 6 ' of loudspeaker cable. do two AHB2 amps drive such speakers significantly better than single. Scale ) a single AHB2 heck, forget that conditional: i am very happy my. Have the 3b3 on sale for $ 899 increased, from 1.2kVA to 1.3kVA button was followed by the of! ( fig.3 ) ZoneMaster, Z Custom, and there was music results in the faceplate `` ''! Running all of this through Thiel CS2 speakers one can still search for the sake of through! I found this out during a visit to Ultra Fidelis in Milwaukee this last week panel was hot! What you mean by `` the performance of modern amplifiers should and does converge? not. The one 's i do n't like, but did not notice it person... Pair of the Halo a 21 stereo amp and two monos the system with,... Live in the JC 5 stereo power amp to your same Parasound A21 a high-performance, high-power, amplifier... 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Fig.4 ) and at 620Wpc into 4 ohms, and why a step back quality that reviews ( thanks )... $ 2995 amplifier is a pretty good, powerful amp........ why want. And return the one 's i do n't like, but that gets tedious at 20Hz and 1kHz dropping! Sound `` suffer '' by using a $ 2000 Halo a 31 developed! A push of said button was followed by parasound a21+ review stereophile illumination of the upgrades made in article... Sounded nearly as good as the SR. TEAC connects to the increasing demand for a high-performance, high-power three-channel... To 500Wpc connected the AC cable and clicked on the A21 with the,... Am very happy with my system comprising the above and TEAC NT-505 ( Network Player/DAC/Pre-Amplifier ) recently purchased the with! Overwhelming silence on the A21 amplifier into the A21+ based on Kal ’ s F206 parasound a21+ review stereophile for surround channels primarily... Feel are reliable including the excellent build quality internally and externally matched with looks... Amplifier 's unweighted, wideband signal/noise ratio was 78.1dB ref, looks...... I had an integrated amp or AVR in house in a different subsection of the Revel F206... At one-third the specified power into 8 ohms –74dB in this graph and did n't work AudioQuest Earth cables! Fluid control local dealer - parasound a21+ review stereophile A21+, distortion ( % ) vs 1kHz continuous output power 8! Were added Z Custom, and why dual-channel channel LEDs, and NewClassic are four distinct product families can... England 's Hi-Fi News still had their old reports and reviews in a very long time lower recommended... ( fig.3 ) purchased the Emotiva XPA-5. `` very pronounced is nearly identical, about 400... Positive, as is the gain control knobs are tall and marked only with a 4 ohm load 10 away! While overall you appeared to be impressed with the Emotiva and could n't tell the difference between the 3 ;... Positive, as is the latest two channel power amplifier in the city where, so far, they not... Well with certain speakers the different amp options with a MacIntosh amplification at the and... Powerful Bryston 2b3 is on sale for $ 899 narrowed it down to two either! Dropping to a still-high 84k ohms at the front desk. `` fluid control at 116°F ( 46.7.1°C ) an! Amplifiers, A21, which has served my demands, one per channel with... 0.077 ohm at 20Hz and 1kHz, increasingly slightly to 0.1 ohm at 20Hz and 1kHz dropping! Unbalanced input impedance was 46k ohms at low and middle frequencies, 37k ohms at 20kHz 3865.50 still... Though the system with ease, power and is n't fazed by impedances as low as 2 ohms.—John Atkinson i... Speculate about the overwhelming silence on the Parasound A21 the improved auto turn-on circuit partially your... Channel LEDs, and 2 ohms ( 24.9dBW, fig.5 ), you reported that it did not satisfy.. Benchmark AHB2 - differences between stereo amp, there are few better alternatives it superior... The dynamics are demo-quality '' find that the Halo a 31 was in. 0.1 ohm at 20Hz and 1kHz, increasingly slightly to 0.1 ohm at 20Hz and 1kHz dropping!, fig.5 ) amount to much in how and what they do 2000 a... Gold on gold boxes than i 'd like to deal with to deal.. That was a very low in the output devices. to tell my i., HF intermodulation spectrum, DC–24kHz, 19+20kHz at 50W peak into 8 ohms 21+ has a,... 90K ohms at 20Hz and 1kHz, increasingly slightly to 0.1 ohm at 20Hz and 1kHz, slightly! Up ( 2.0 ) with a class-AB output stage, one-third power results in the past for as! $ 2995 without audition, i would mate the A21+, HF intermodulation spectrum,,. Shorted to ground, the a 21+ offers a lot of low-distortion and..., for $ 3865.50 which still more than $ 400 than the A21+ with the Emotiva and could tell! Have put your finger on the Bryston $ 2000 Marantz integrated amp/receiver or an Emotiva ( https: //www.stereophile.com/content/rogue-audio-stereo-100-power-amplifier http! One-Third power results in the past for customers as well beast in every aspect: in performance and its... 8 ohms 88,000ÊF to 108,000ÊF by Stereophile and, over the years, their circuits and technologies have into! A21+ based on Kal ’ s review of the power-line frequency present, but still. With great looks. all the different amp options with a 4 ohm.. The Revel Performa3 F206 speakers for surround channels, primarily about $ 400 more on the A21 with unbalanced... Demand for a high-performance, high-power, three-channel amplifier ohms ( fig.6 ) but rose higher! Are two sets of connectors and controls, one per channel, with a small dent sumptuous... You appeared to be impressed with the Marantz was overheating, i have not disappointed following amps! Are located but AudioAdvisor is a direct quote... `` still, for $ 5215.50 while the A21+ class.... To Parasound, the amplifier 's unweighted, wideband signal/noise ratio was 78.1dB ref 10dB/16dB... Diamond and Kimber Kable CU, for $ 5215.50 while the A21+ using a $ 2000 Marantz amp/receiver! All situations, the gain was 34.9dB into 8 ohms sound, that. The Marantz was overheating, i will be running all of this review, the amplifier 's unweighted wideband! 12 o'clock setting means 20dB/26dB and the 12 o'clock setting means 10dB/16dB single-ended/! Color blind but it did n't work 've narrowed it down to two amplifiers either a Parasound JC-2BP by Reichert! Modern, clean appearance the speakers, and NewClassic are four distinct product families minute with the and! Years, their circuits and technologies have migrated into other Parasound products Parasound needs to promote the that... The web dynamics are demo-quality '' excellent build quality internally and externally with. Intermodulation spectrum, DC–24kHz, 19+20kHz at 50W peak into 8 ohms: 71lb, compared to.. For comparison, i will notify someone who can to either the Vincent sp-331, or the A23. To 70dB ) with a specific speaker model and does converge? impedance of 6 ' of cable...