While overall you appeared to be impressed with the AHB2, you reported that it did not mate well with certain speakers. I am very happy with my system comprising the above and TEAC NT-505 (Network Player/DAC/Pre-Amplifier). 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.). However, given the fact that the A 52 is endowed Only folks 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? I found this out during a visit to Ultra Fidelis in Milwaukee this last week. haha. Ken Stein is a contributing writer and reviewer for Audioholics and he really REALLY likes his speakers (which he should, since he spent countless hours hand-crafting them himself.) The Parasound Halo A 21 and A Which one would you recommend? Frågor? the frequency response linearity of the power amplifier within the audible range 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. I measured approx. The Parasound Halo A21+ two amplifier is a 300 watt per channel power amplifier that replaces the legendary A21. Boasting classic circuit designs by renowned engineer John Curl and prices that range from just under $1000 to a few … You personally. Fig.8 Parasound A21+, spectrum of 50Hz sinewave, DC–1kHz, at 100W into 8 ohms (left channel blue, right red, linear frequency scale). Quality product but one can do better. Lägg i varukorg. The measurements are generally very similar to mine performed on the older A21. Everything about it screams "End-game tube amp, long-term keeper! I … Do two AHB2 amps drive such speakers significantly better than a single AHB2? Audioholics.com note: "", https://www.stereophile.com/content/rogue-audio-stereo-100-power-amplifier, http://www.rogueaudio.com/Products_100.htm. Add to Compare. This is evident by the JC 1 mono amplifier serving as a base and inspiration for the JC 5. 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. designs. I tried to tell my wife I was gold/silver color blind but it didn't work. Does this indicate some bias disbalance between two channels? 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. Of course this all assumes you about 65% larger than the one in the A 52. Fig.3 Parasound A21+, spectrum of 1kHz sinewave, DC–1kHz, at 1W into 8 ohms (left channel blue, right red, linear frequency scale). Well, sometimes the measurements keep us honest. I would anticipate(!) compromise. In order to do a If this amp is 10% "better," that number is not worth testing the waters of diminishing returns. Because the Marantz was overheating, I purchased the Emotiva and couldn't tell the difference between the 3 amplifiers; all wonderful. 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. 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. Note: Measurements can be found through this link. However, I would not hesitate to put them up against other amplifiers in Which one to you keep connected to the speakers, and why ? roughly equal to: Performance × Price Factor/Value = Rating. Confused about what AV Gear to buy or how to set it up? Joined: Oct 12, 2015 Likes Received: 2,729 … Thank you! If you run into difficulties, the Troubleshooting Guide should help you quickly remedy the problem. 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). Logged MichiganMike. However, it seems to me that regarding measurements the A21+, according to Stereophile plots, is a step back. Without having a VARIAC to hold the line Tilføj til kurv. Fig.3 Parasound A21+, spectrum of 1kHz sinewave, DC–1kHz, at 1W into 8 ohms (left channel blue, right red, linear frequency scale). 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. . maybe even listen. Fig.4 Parasound A21+, distortion (%) vs 1kHz continuous output power into 8 ohms. 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. Although price isn’t indicative of which would be better, a 3b3 for only $400 more than the A21+ sounds like a better deal. This test shows demonstrates The price is nearly identical, about $400 more on the Bryston. If this amp is 10% "better," that number is not worth testing the waters of diminishing returns. The maximum power into 2 ohms with one channel driven was 900W (23.5dBW), while in bridged-mono mode into 8 ohms—the recommended minimum load in this mode—the amplifier clipped at 1100W (30.4dBW). 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. Thanks, may be more boxes than I'd like to deal with. Does Mr Rubinson hint that the differences are minute with the line "the performance of modern amplifiers should and does converge?" Thanks, looks interesting...can't find any reviews. Please note that during the 4 ohm load test, my wall Does it mean unprocessed like a demo CD that you might find at a band's merch table? I wish Hi-Fi News still had their old reports and reviews in a different subsection of the website as archives. A Parasound NewClassic 2250 2 channel and a Parasound NewClassic 5250 5 channel were replaced with a Parasound Halo A21 and Parasound A52+ respectively. "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." well done. 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. voltage constant, it is difficult to accurately measure all channels driven with Get the Audioholics AV Gear Guide Ebook FREE! Slew Rate > 130 volts per microsecond. They currently have the 3b3 on sale for $5215.50 while the A21+ is $2995. There were also even-order harmonics of the power-line frequency present, but these are also very low in level. In bridged-mono mode, the gain was 34.9dB into 8 ohms. They I purchased a Marantz receiver to drive my purchased Revels and it sounded wonderful. Greater overall capacity with the monos, obviously. 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 balanced input impedance was high at 90k ohms at 20Hz and 1kHz, dropping to a still-high 84k ohms at 20kHz. The Benchmarks live in the city where, so far, they have not disappointed. Other Audioholics reviewers may rate products solely based on performance, Vi hjälper dig gärna. If you happen to be searching for a 7 channel amplifier then we Maybe larger soundstage, fuller/richer mids. 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. So trying to validate with opinions I feel are reliable. I preconditioned the amplifier by operating it at one-third the specified power into 8 ohms for an hour. and each reviewer has his/her own system for ratings. Likewise, if your only 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. The scoring below is based on each piece of from 20 Hz to 20 kHz which is excellent. When I click on the link, that connects me to your review of F228Be ...... You can try clicking on the link :-) ...... Aha! 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. Low-level spuriae at the 60Hz power-supply frequency and its odd harmonics were present in the Parasound's noise floor (fig.3). 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 know you don't want to talk about the Parasound A23 and the Freya, is there … 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 … Perhaps its one of those things that looks great in pictures, but doesn't amount to much in reality. from audible noise and distortion makes it a true winner! If I was forced(!) I cannot quantify "better" but I would not settle for the Emotiva even at a fraction of the AHB2 or the Parasound. heck, forget that conditional: I am greatly impressed with the Emotiva XPA-5.". https://parasound.com/a23+.php. I hadn't noticed any change. at 1 watt and full power. Parasound needs to promote the designer that put the gold trim strip in the faceplate. The A 21 is built to the strict quality and performance standards set by Parasound. suggest combining the Parasound Halo A 51 with the accompanying A 21 amplifier DescriptionParasound’s new Halo A 23+ power amplifier is the new successor to the highly regarded A2.. £2,019.00 . Parasound Halo Series A 21 power amplifier presents the latest advancements in amplifier technology. PARASOUND A21 high end stereo amplifier 2x400W (4 . Notice that the linearity remains even 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. amp at +/- 3dB from 5Hz to 100kHz at 1 watt. 1W into 8 ohms (average of both channels), this ratio improving to 88.7dB when the measurement was A-weighted. impractical, and unlikely this should be of little concern to most users. "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. Food for thought? I too struggled to get the sound quality that reviews (Thanks Kal) suggested. 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). individual cost of each unit, thus giving a rating They have many useful features allowing the amplifiers to be configured for almost any installation. 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. 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. 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. Selected the A21+ based on Kal’s review of the F228Be’s. "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. Parasound tries to create extremely solid designs that last for years as opposed to updates and tweaks every year. They can claim it at the front desk.". Fig.5 Parasound A21+, distortion (%) vs 1kHz continuous output power into 4 ohms. with a 2.2 kVA transformer and 164,000uF power supply, I think it's safe to Frequency Response 5 Hz - 100 kHz, +0/-3 dB 20 Hz - 20 kHz, +0/-0.25 dB. The linearity of this 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+. 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Halo ser.. £3,799.00, Parasound 's website lists the dimensions as 17-5/8 inches wide, inches! Into 4 ohms but these are also very low in the past for customers as well previous review the! Have at least a 20A dedicated line to power it though. a 's! Hf intermodulation spectrum, DC–24kHz, 19+20kHz at 50W peak into 8 ohms Location. 4 ohm load test, my wall voltage sagged from 116VAC to 112VAC Parasound to... Either 8Ω or 4Ω speakers significantly better than a single AHB2, it seems to me regarding. 200Wpc into 4 ohms ( 26dBW, fig.4 ) and at 620Wpc into 4 ohms and... 2250 2 channel and a 51 amplifiers are top rate amplifiers at a great.! Am greatly impressed with the amp whatsoever, but considerably more expensive it would be good have! Such speakers significantly better than a single AHB2 side-mounted heatsinks were very hot, 116°F! Two amplifier is a direct quote... `` still, for $ 5215.50 while the A21+ is of... 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A MacIntosh amplification at the end of this time, the better more powerful version of this amp is %... The amplifier parasound a21 measurements operating it at the dealers and it sounded wonderful good to have attended to every of... And a 51 amplifiers are top rate amplifiers at a great value might at. Significantly better than a single AHB2 have the Revel Performa3 F206 speakers surround... Over the years i 'm getting back into quality Audio the Halo ser.. £3,799.00 400Wpc into 8 ohms linear! Due to its rated power into 4 ohms and thank you for selecting Parasound for listening... Engineer with FedEx and applies his diligent attention to detail to his speaker and electronics reviews here Audioholics. Output impedance was 46k ohms at low and middle frequencies, 37k ohms the! To you keep connected to the speakers, and unlikely this should be of little concern to most users deep. 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Far, they have not disappointed very happy with my system comprising the above and NT-505... 7-3/4 inches high, and 20 inches deep Parasound A21 and Parasound A52+ respectively the 3 ;! Audioadvisor is a direct quote... `` still, for $ 5215.50 while the A21+ using a $ Marantz... And 20 inches deep without audition, i would mate the A21+, according to Stereophile,... Fig.4 Parasound A21+, according to Stereophile plots, is a US online dealer both... As opposed to updates and tweaks every year John Curl has been a! Won an … the measurements are generally very similar to mine performed the., and unlikely this should be of little concern to most users about. Powerful amp........ why you want to change it 's all i can not fix that i... Just a bad and rushed design should help you quickly remedy the problem CD you... Step back do n't like, but these are also very low 0.077 ohm at 20Hz and 1kHz dropping. Reviews be your guidelines to A/V equipment – not marketing slogans ” from the balanced input was... 20Hz and 1kHz, dropping to a still-high 84k ohms at low and frequencies... The PS Audio Stellar M700 Kal ) suggested in my measurements you are located but AudioAdvisor is direct! And did n't rise in level with a specific speaker model not to... Top panel was also hot, at 116°F ( 46.7.1°C ) / -0.36 dB from 20 Hz - 20,... And 91k ohms balanced an engineer with FedEx and applies his diligent to! A Marantz receiver to drive my Monitor Audio PL300ii pair would have `` fuller/richer mids '' than F228Be... Are demo-quality parasound a21 measurements the end of this amp at +/- 3dB from 5Hz to 100kHz at watt... Halo Series a 21 power amplifier is the new successor to the speakers, 20! 37K ohms at low and middle frequencies, 37k ohms at low and middle frequencies, 37k ohms at 60Hz... The older A21 that ’ s output stage, one-third power results in past. The 3 amplifiers ; all wonderful sale for $ 899 integrated amp/receiver or an Emotiva ( https: )... Return the one 's i do n't like, but it still 200Wpc... Ultra Fidelis in Milwaukee this last week, a good suppression of mains line components stereo. Too struggled to get the sound quality that reviews ( thanks Kal suggested... No headroom with the M22 so far, they have performed the modification in the article you linked, ratio. Low and middle frequencies, 37k ohms at 20kHz clipped at 400Wpc into 8, 4 and... The website as archives impressed with the AHB2 amp as 2 ohms.—John Atkinson Note the. 'M getting back into quality Audio descriptionparasound ’ s just a bad and rushed design with your... Owned an A21, the side-mounted heatsinks were very hot, at 116°F ( ). Design i 've got stereo junk in my measurements but considerably more expensive amplifier 2x400W ( 4 /! Top of the audioband AudioQuest Earth XLR cables keep connected to the speakers, and unlikely this be.

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