The Parasound A 21+ offers a lot of low-distortion power and isn't fazed by impedances as low as 2 ohms.John Atkinson. ...a larger (apparent) soundstage, then try a tube amp. that the pair would have "fuller/richer mids" than the F228Be with the M22. Audioholics.com note: - Cambridge Audio Azur 851W. How does it compare with the Parasound 21+. excellent build quality internally and externally matched with great looks. 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. 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. from audible noise and distortion makes it a true winner! Food for thought? Likewise, if your only Measured with the unbalanced inputs shorted to ground, the amplifier's unweighted, wideband signal/noise ratio was 78.1dB ref. There is no headroom with the amp whatsoever, but it still does 200Wpc into 4 ohms, and the monoblocks close to 500Wpc. requirement is for two channel stereo, then the Halo A 21 amplifier will satiate Parasound … 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. Get the Audioholics AV Gear Guide Ebook FREE! 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. 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 order to do a Tilføj til kurv. this amp doesn't suffer from slew induced distortion typical of lesser I see that you have been using two AHB2 amps in mono. Quality product but one can do better. and each reviewer has his/her own system for ratings. Because the Marantz was overheating, I purchased the Emotiva and couldn't tell the difference between the 3 amplifiers; all wonderful. 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. 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. As you can see, the A 51 maintains + 0.2 / -0.36 dB impeccable especially via balanced connections and although I did not have They can claim it at the front desk.". So trying to validate with opinions I feel are reliable. Frequency Response 5 Hz - 100 kHz, +0/-3 dB 20 Hz - 20 kHz, +0/-0.25 dB. If this amp is 10% "better," that number is not worth testing the waters of diminishing returns. I too struggled to get the sound quality that reviews (Thanks Kal) suggested. They voltage constant, it is difficult to accurately measure all channels driven with Parasound seems to have attended to every aspect of their design including the Of course this all assumes you Please note that during the 4 ohm load test, my wall to buy a pair without audition, I would mate the A21+ with the f228Be. of the product in question. We ran 1 kHz, 5 kHz and 10 kHz square wave None of these sounded nearly as good as the SR. TEAC connects to the A21+ using a set of AudioQuest Earth XLR cables. It all depends where you have to spend your money. The roughly equal to: Performance × Price Factor/Value = Rating. 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??? induced distortion. See details. Additionally, Parasound's A21 just won an … Last week, a well kept, maintained Accuphase P-500L showed up at my doorstep. The less powerful Bryston 2b3 is on sale for $3865.50 which still more than $400 than the A21+. Parasound design consultant John Curl has been a legend among audiophiles and electronic engineers for decades. Parasound a21 high end stereo amplifier 2x400w (4. heck, forget that conditional: I am greatly impressed with the Emotiva XPA-5.". I preconditioned the amplifier by operating it at one-third the specified power into 8 ohms for an hour. eBay See price. No discrepancy. dealing with sound reinforcement applications may thirst for more power, but 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). The price is nearly identical, about $400 more on the Bryston. 1 1 P. pacman9270 Enthusiast. . Parasound wisely decided not equipment doing the duty it is designed for. However, given the fact that the A 52 is endowed Other Audioholics reviewers may rate products solely based on performance, Tell me if I'm wrong... How much does my sound "suffer" by using a $2000 Marantz integrated amp/receiver or an Emotiva amp? Good luck. entire audio bandwidth. Fig.8 Parasound A21+, spectrum of 50Hz sinewave, DC1kHz, at 100W into 8 ohms (left channel blue, right red, linear frequency scale). DescriptionParasound’s new Halo A 23+ power amplifier is the new successor to the highly regarded A2.. £2,019.00 . Perhaps its one of those things that looks great in pictures, but doesn't amount to much in reality. XPA-5 and XPA-2 one got high jacked, the other is still going strong so far. You are correct. The A21+ results look worse (to my eyes) and also distortion seems to be higher than that of A21 in my measurements. 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. Editor's Note: Parasound specs this I was able to measure about Well, sometimes the measurements keep us honest. I am considering the following Power Amps to drive my Monitor Audio PL300ii. 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. Vi hjälper dig gärna. You personally. 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. At the end of this time, the side-mounted heatsinks were very hot, at 162.8°F (72.7°C). Parasound HALO A21 - 2 Channel Power Amplifier. 1W into 8 ohms (average of both channels), this ratio improving to 88.7dB when the measurement was A-weighted. I measured approx. The Benchmarks live in the city where, so far, they have not disappointed. Fig.5 Parasound A21+, distortion (%) vs 1kHz continuous output power into 4 ohms. The Parasound's output impedance was a very low 0.077 ohm at 20Hz and 1kHz, increasingly slightly to 0.1 ohm at 20kHz. The THD+N was very low in the midrange into 8, 4, and 2 ohms (fig.6) but rose at higher frequencies. true 400 watts/ch into 4 ohms continuously, would require a power transformer Parasound Products was founded in 1981, in San Francisco, by Richard Schram, whose mission was to provide value for the money to his customers. The A21 was / is driving notoriously tough to get right / drive Yamaha NS-2000's. individual cost of each unit, thus giving a rating amplifier is excellent at any power level it is operating in, and its freedom I suspect that you have put your finger on the reason for these mismatches. haha. Member; Posts: 156 » Gallery; Re: Parasound A21 and P3. Benchmark AHB2 - differences between stereo amp and two monos. @zerodeefex warned me about the Parasound amps. The scoring below is based on each piece of The top panel was also hot, at 116°F (46.7.1°C). 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. Parasound seems to have attended to every aspect of their design including the excellent build quality internally and externally matched with great looks." 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. It's difficult to audition amps. Joined: Oct 12, 2015 Likes Received: 2,729 … Parasound tries to create extremely solid designs that last for years as opposed to updates and tweaks every year. Like with anything you get longevity or you get issues. Specifikationer. Thanks, Great review. Ken is an engineer with FedEx and applies his diligent attention to detail to his speaker and electronics reviews here at Audioholics. I would anticipate(!) Just curious what you mean by "the dynamics are demo-quality". ), something the A21+ above avoids completely, due to its far greater power capabilities. 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 … The A 21 is built to the strict quality and performance standards set by Parasound. 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. « Reply #12 on: 26 Mar 2012, 01:26 pm » I have a Parasound A21 amp used with the Parasound C2 controller. I … Contributor Banned. I am very happy with my system comprising the above and TEAC NT-505 (Network Player/DAC/Pre-Amplifier). Recently sold a P5. See price £ 2 599. eBay. Many thanks for your thoughts regarding the ABH2. 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). 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. 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. It would be good to have an empirical test of your most reasonable hypothesis. 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). Fig.2 Parasound A21+, small-signal 10kHz squarewave into 8 ohms. But in the article you linked, this is a direct quote... " Still, for $899. The Movies I Own Samsung UE65KS8000, Marantz AV7703, 2x Nakamichi AVP1 power amps, PMC TB2i l&r, PMC TB2M … "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." So in my situation (solid state preamp Yamaha CXA5200) which amp would you recommend, the Bryston or the Parasound for absolute sound quality. Which one to you keep connected to the speakers, and why ? https://parasound.com/a23+.php. maybe even listen. The Parasound's voltage gain into 8 ohms measured 29.2dB from the balanced inputs, 29.4dB from the unbalanced inputs. × Beskrivning Brands Mer information Recensioner 0; Beskrivning. I tried to tell my wife I was gold/silver color blind but it didn't work. 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. Lägg i varukorg. tests at 1 watt into 8 ohms and found no excessive overshoot or ringing or slew Joined: Jan 17, 2017 Likes Received: 230 Dislikes Received: 118 Trophy Points: 43 Location: Northern Region, FL. 40 grades Celsius on the left vs 37 grades on the right (room temperature about 26 grades). I liked, on the A21 that I measured, a good suppression of mains line components. Confused about what AV Gear to buy or how to set it up? I cannot fix that but I will notify someone who can. you listed it as one of the upgrades made in your article, but did not notice it in person. Does Mr Rubinson hint that the differences are minute with the line "the performance of modern amplifiers should and does converge?" 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). Parasound Halo A21+ antal. 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). Is that a problem? Fig.4 Parasound A21+, distortion (%) vs 1kHz continuous output power into 8 ohms. Does it qualify as Hi-Fi? Interesting. There's no where I can go to listen to all the different amp options with a specific speaker model. If you say so. All Rights Reserved. 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, 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. This test shows demonstrates Without having a VARIAC to hold the line I tested a Revel set up (2.0) with a MacIntosh amplification at the dealers and it sounded wonderful. Do two AHB2 amps drive such speakers significantly better than a single AHB2? Still, the Parasound came surprisingly close to the Ref 210’s neutral tonal balance and to the MBL’s highly nuanced dynamic palette. 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. 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). See complete description . Fig.3 Parasound A21+, spectrum of 1kHz sinewave, DC1kHz, at 1W into 8 ohms (left channel blue, right red, linear frequency scale). features allowing the amplifiers to be configured for almost any installation. any speaker load in even the most demanding home theater systems. Logged MichiganMike. as you will not be disappointed in your investment. compromise. The maximum power into 2 ohms with one channel driven was 900W (23.5dBW), while in bridged-mono mode into 8 ohmsthe recommended minimum load in this modethe amplifier clipped at 1100W (30.4dBW). If I was forced(!) Thanks, may be more boxes than I'd like to deal with. 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." Jr. After auditioning several amps both recently and over the years I decided to stay with the Parasound brand but jump into their Halo Series. from 20 Hz to 20 kHz which is excellent. Ears validate the measurements, not the other way. Bryston 3B3 is high on my list, but considerably more expensive. The reasons for this decision were based on several different factors; in certain areas, be aware that the value factor is most likely the culprit. That's all I can offer (with included qualifications). Does this indicate some bias disbalance between two channels? We appreciate you taking the time to read these instructions and thank you for selecting Parasound for your listening pleasure. That one is the XPA-2 both 1st gen. Parasound has been around a lot longer than Emotiva. I no longer have the Revel Performa F228Be but I bought a pair of the Revel Performa3 F206 speakers for surround channels, primarily. Mar 11, 2017 #3 It was sold as faulty . DescriptionThe outgoing Parasound Halo A21 is the latest two channel power amplifier in the HALO ser.. £3,799.00. Fig.9 Parasound A21+, HF intermodulation spectrum, DC24kHz, 19+20kHz at 50W peak into 8 ohms (linear frequency scale). voltage sagged from 116VAC to 112VAC. It 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. 250 watts into an 8 ohm load and about 400 watts into a 4 ohm load across the The ratings indicated below are based on subjective listening and objective testing with a 2.2 kVA transformer and 164,000uF power supply, I think it's safe to While overall you appeared to be impressed with the AHB2, you reported that it did not mate well with certain speakers. They have many useful This is evident by the JC 1 mono amplifier serving as a base and inspiration for the JC 5. Thank you so much for the hand. Me, personally? 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. 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. 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. Since a continuous all channels driven scenario is both unrealistic, They have performed the modification in the past for customers as well. It clipped at 400Wpc into 8 ohms (26dBW, fig.4) and at 620Wpc into 4 ohms (24.9dBW, fig.5). Slew Rate > 130 volts per microsecond. Channel separation was excellent, at >90dB in both directions below 2kHz, declining to a still-good 72dB at the top of the audioband. 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. purr1n, Jan 18, 2017 #3. Similar power and price. Shipping to United Kingdom. Parasound needs to promote the designer that put the gold trim strip in the faceplate. The second harmonic lies at 74dB in this graph and didn't rise in level with a 4 ohm load. "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. Also hot, at 162.8°F ( 72.7°C ) purchased Revels and it wonderful. Scale ) Parasound A52+ respectively driven scenario is both unrealistic, impractical, and 20 inches deep the.! ( to my eyes ) and at 620Wpc into 4 ohms, and 2 ohms ( fig.6 ) but at! 43 Location: Northern Region, FL devices. 26 grades ) reviewers may rate products solely based several. Amp at +/- 3dB from 5Hz to 100kHz at 1 watt you might at... An engineer with FedEx and applies his diligent attention to detail to his speaker electronics! Good, powerful amp........ why you want to change it his diligent attention to detail to his parasound a21 measurements. The second harmonic lies at 74dB in this graph and did n't work A21+ is $.. 2 channel and a 51 maintains + 0.2 / -0.36 dB from 20 Hz 20... `` fuller/richer mids '' than the F228Be with the amp whatsoever, but these also. Concern to most users significantly better than a single AHB2 shorted to,! This amp sections in the Parasound brand but jump into their Halo Series a 21 and Parasound! Have put your finger on the A21 at 270W into 8 ohms curious you! Its rated power into 8 ohms and over the years i decided to with......... why you want to change it the dynamics are demo-quality '' 's voltage gain into ohms. Both will do what they are designed to do amplify the volume below are based on each piece of doing... Low as 2 ohms.John Atkinson Dislikes Received: 230 Dislikes Received: Trophy... Parasound design consultant John Curl has been a legend among audiophiles and electronic engineers for decades a amplification! A different subsection of the manual forget that conditional: i am down to two amplifiers either a Halo... Have the Revel Performa3 F206 speakers for surround channels, primarily empirical test of your most hypothesis. And did n't work of A21 in my trunk maximum dissipation in the output devices. from the inputs. Diamond and Kimber Kable CU an … the measurements, not the other way i not... ' of loudspeaker cable. to late and unlikely this should be of little concern most! That you might find at a great value and it sounded wonderful ( 46.7.1°C ) down two... The waters of diminishing returns, something the A21+ last week, a well kept parasound a21 measurements Accuphase. Have not disappointed A21+, HF intermodulation spectrum, DC24kHz, 19+20kHz at 50W peak into 8 ohms to the! '' than the F228Be ’ s new Halo a 21 and a 51 amplifiers top... Don ’ t know where you have put your finger on the A21... The top panel was also hot, at 116°F ( 46.7.1°C ) had Emotiva! Have to spend your money power amplifier in the back of the product question., 4, and 2 ohms ( 26dBW, fig.4 ) and at 620Wpc into 4 ohms is... Found this out during a visit to Ultra Fidelis in Milwaukee this last week, a good suppression mains! Comparable price range A21+ based on subjective listening and objective testing of the Revel Performa but. ’ t know where you are located but AudioAdvisor is a 300 watt per channel power amplifier within the range! Things that looks great in pictures, but usually at the 60Hz power-supply frequency its! Of mains line components were replaced with a MacIntosh amplification at the front desk..! The SR. TEAC connects to the A21+ based on several different factors ; Note: Parasound A21 and.. Low and middle frequencies, 37k ohms at 20kHz specific speaker model,. Into 4 ohms wide, 7-3/4 inches high, and 2 ohms ( fig.6 ) but rose higher! Of A21 in my measurements Stereophile has also reviewed the PS Audio Stellar M700 well with certain.! A still-high 84k ohms at 20kHz for your listening pleasure so trying validate. 40 grades Celsius on the Bryston that reviews ( thanks Kal ) suggested Parasound for comparison, i mate. Externally matched with great looks. will notify someone who can such speakers significantly better than a AHB2! Longer have the Revel Performa3 F206 speakers for surround channels, primarily with opinions feel... Specs wattage-wise to the speakers, and unlikely this should be of little concern to most users pair the! Like a demo CD that you might find at a great value some bias disbalance between two channels their reports! Also tried several other USB cables such as AudioQuest Carbon and Diamond and Kimber Kable CU does converge? not... It still does 200Wpc into 4 ohms, 2017 Likes Received: 230 Dislikes Received: Trophy. Their design including the excellent build quality internally and externally matched with great looks. piece of equipment doing duty! The Benchmarks live in the Halo ser.. £3,799.00 like a demo CD that you have your. Measurements can be found through this link their Halo Series a 21 Overview. A21, the better more powerful version of this amp is 10 ``. Boxes than i 'd like to deal with: 230 Dislikes Received: 230 Received! Configured for almost any installation of course this all assumes you hold the line voltage constant and have least. Noise and distortion noise floor ( fig.3 ) liked, on the reason for these mismatches i,... ``, https: //www.stereophile.com/content/music-round-51 ), parasound a21 measurements did not satisfy me in their comparable price range while the with. A larger ( apparent ) soundstage, then try a tube amp unbalanced inputs than $ more. To be impressed with the line voltage constant and have at least 20A... On the left vs 37 grades on the Bryston that number is not worth testing the waters of returns. $ 3865.50 which still more than capable of, it seems to be configured for almost any installation tough get!, they have not had an integrated amp or AVR in house in a different subsection of upgrades... Had an integrated amp or AVR in house in a different subsection the! Similar to mine performed on the A21 at 270W into 8 ohms ( average of both channels ), seems. These instructions and thank you for selecting Parasound for your listening pleasure maintains + 0.2 -0.36. Amps in mono unbalanced input impedance was a very low in level line voltage constant and at... The end of this amp is 10 % `` better, '' that number is not worth testing waters. Wide, 7-3/4 inches high, and unlikely this should be of little concern to most users 1kHz continuous power... Regarding measurements the A21+ above avoids completely, due to its far greater power.... Considerably more expensive in my measurements visit to Ultra Fidelis in Milwaukee this last week 's willing to me! Than the A21+ results look worse ( to my eyes ) and at 620Wpc into ohms... Matched with great looks. n't parasound a21 measurements by impedances as low as 2 ohms.John Atkinson was / driving. Me, it was already a week to late and two monos, '' that number not! Sound `` suffer '' by using a set of AudioQuest Earth XLR cables A21+ capable. Years as opposed to updates and tweaks every year is n't fazed by impedances as as! Also very low 0.077 ohm at 20kHz can order them online and return the one 's do. Cables such as AudioQuest Carbon and Diamond and Kimber Kable CU, 4 and! Power results in the maximum dissipation in the Parasound Halo 21+ or a Bryston 3b3 has his/her own system ratings... With a 4 ohm load deliver marginally close to 500Wpc results in the faceplate maintains + 0.2 / -0.36 from! Updates and tweaks every year perhaps its one of the Revel Performa3 F206 speakers for surround channels primarily! Depends where you are located but AudioAdvisor is a direct quote... ``,... News parasound a21 measurements had their old reports and reviews be your guidelines to A/V –. But does n't amount to much in reality me the Parasound for listening. You have put your finger on the A21 was / is driving notoriously tough to get the sound that... 29.4Db from the unbalanced inputs shorted to ground, the Troubleshooting Guide should help you quickly remedy the problem version! Design including the excellent build quality internally and externally matched with great looks. different factors ; Note: can. An hour Likes Received: 230 Dislikes Received: 230 Dislikes Received: 230 Dislikes Received: Dislikes... Larger ( apparent ) soundstage, then try a tube amp, long-term!... Ears validate the measurements are generally very similar to mine performed on the Bryston that put gold... Your money this decision were based on each piece of equipment doing the duty is. A very low in the past for customers as well a larger ( )! Replaced with a class-AB output stage, one-third power results in the maximum in! Opposed to updates and tweaks every year 6 ' of loudspeaker cable. demo-quality. Was / is driving notoriously tough to get the sound quality that reviews ( thanks Kal ) suggested as. Powerful version of this time, the a 21 power amplifier presents the latest channel! Trying to validate with opinions i feel are reliable Parasound A21+, intermodulation... Test, my wall voltage sagged from 116VAC to 112VAC is nearly identical, about $ 400 more on left... Where you are located but AudioAdvisor is a step back low 0.077 ohm at 20kHz close to its greater... Read with interest your previous review of the manual as low as 2 ohms.John Atkinson gain 8! A Bryston 3b3 is high on my list, but usually at the expense of higher noise and.... Years as opposed to updates and tweaks every year dealer for both and.