NAD M23 Stereo Amplifier: Best Amp Ever Bench Tested?!?

Ever so often a product enters our lab that absolutely blows us away and redefines a category. The NAD M23 is such a product as you can see in my test report.
The NAD M23 is a 200wpc stereo amp that utilizes the SOTA Class D Purifi 1ET400A reference design to push the envelope of performance and efficiency. Weighing just a tad over 21lbs, this amp can double down with halving load impedance and be bridged to get 1kwatt of power as a monoblock. What is most impressive about this amp is the extremely low noise and distortion performance that forced us to redesign our test fixture to more accurately measure. Is this the best measuring amp in Audioholics 23+ year history of reviewing AV gear? Does this type of Class D design mark the end of an era of inefficient linear amplifiers? Watch our KZbin video breakdown to find out.
For the full written review, please visit: bit.ly/NADM23t...
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[@toolizcool]

Gene DellaSala, one of the few KZbinrs who actually gives information with measured data and engineering knowledge instead of some bullshit like "sounds chocolatey with lots of warm" or whatever the hell that means. Too much subjective nonsense and not enough science from other AV "experts".

[@jackanderson2773]

Science was built on questioning . Something missing these days .

[@DRICKismyNAME]

heard this unit powering up the DALI KORE at a hi-fi show, it blows every other amplifier way that was way above its price, it's one of the best amp money can buy this year...period.

[@danielcaswell9945]

I love the new class D sound. I'd be curious how the more affordable C298 compares to M23.

[@healthynutster]

While this amp is prohibitively expensive for many people, and some will dismiss it simply because it’s class D, I think the real exciting news is that this technology could find its way into receivers and multichannel amps. This will result in quieter, lighter, cooler running products with higher channel counts and higher power ratings. Bring it on!

[@Audioholics]

Agreed 100%

[@alphaniner3770]

It has a high probability to become a landmark product, and indeed causing improvements elsewhere. Regarding class D, this topology also is a lot more energy efficient - which is great for the environment and for keeping energy bills affordable :)

[@rianredfield5252]

Can you say 3020 flashback? Cheers NAD!

[@hotdog9262]

hot under powered receivers have been a problem since the start. class d receivers..glorious

[@jimmyb6579]

​@@Audioholics Regarding the M23 review which was really enjoyable 👍, what do you think would make for a good pre amp for controlling the M23, something like a Prima Luna 400 to add a little warm as I understand the amp is quite neutral? Kind regards James

[@phpn99]

The real genius is the Purifi engine in this thing. We can all thank Mr Bruno Putzeys.

[@sudd3660]

i went for the cheaper purify model, NAD c298. i wanted headroom for heavy dsp applications and low noise. and sure enough i can apply almost any type of dsp levels and it all sound good.

[@scottcarlon6318]

Unless you like your sound colored, I think we can say a/b amps are dead. There is no rational explanation for spending your money on an A/B AMP, conversation over.

[@boedilllard5952]

Thanks so much for the review- please do a comparison of the NAD, ATI and Monolith Class D and ideally compare them to a good AB Amp in a home theater environment. There is very little on youtube for comparisons of this type. It might even be great to do a group review and have them guess which of the 4 is the AB amp.

[@Kukkema]

Any experience with the nad c298?

[@fdude555]

Somebody send this man a nad298 for testing already

[@spencerl885]

Great review! There is obviously far more to D-class amp design than throwing a D-class chipset, a SMPS power supply and some plugs in a chassis. Hope you can point out some of the differences between the insides of a 1/2 price chinese D-class amp product with same chipset and this NAD. (I can see the input gain circuitry is one of them). Looking forward to the listening test!!!

[@jtmcfarland3512]

Have you tested the NAD C298? My understanding is it’s the same amp as the M23, but with a different power supply and chassis. I’d be quite grateful to see a comparison with data. I can’t find the two models compared in one article/video anywhere on the internet.

[@NosEL34]

It's a beautiful thing. I will say, once you hear the black background of these good Purifi and Hypex module amps you can really tell the difference when you switch back to an AB amp.

[@Bluecrabsandsushi]

purifi really seems to be making some real game changing products. their drivers look very promising

[@tomehCanada]

Newform Research Speaker has used their drivers on two new prototypes and said they are the lowest distortion they have ever used and create a very silent background.

[@batmanthinks]

I wonder how this compares to a benchmark ahb2. It looks like they're similarly clean measuring amps but the m23 is more expensive and it has more power at 8 ohms but they have similar power at 4 ohms (according to audio science review)

[@QQ-td9id]

Yes. Have 2 of those which are not class D, wonder how different they sound.

[@volpedo2000]

I wish NAD did a smaller mono version for the center channel or a three channel version. Bridging the M23 seems overkill -both in power and price- for a center channel.

[@StrangeBrewReviews]

Look at the TEAC ap-505

[@mrpmj00]

As much as I love my Parasound 2125v2 for my GoldenEar BRX, I've upgraded to the NAD C298 (similar to NAD M23). My Parasound will be moved to powering the surround L/R speakers in a mixed use music/movies 7.4.4 setup. My requirements (

[@aussie8114]

6k in my country yet there’s not a lot inside that nice box. I listened to it and thought it sounded vailed. It’s ok but not for me. Measurements to me are not that important, my ears don’t hear measurements.

[@Audioholics]

Your ears will hear noise, distortion and amplitude problems if an amp measures that way. You do hear the effects of a very bad measuring amp.

[@jaydee6268]

And he might even enjoy hearing the bad measurements.

[@Audioholics]

@@jaydee6268 sure and some people might enjoy driving a car that doesn't handle or accelerate well. For others, like myself, we prefer great performance.

[@_Chev_Chelios]

@@Audioholics but isn’t like you are measuring the difference between 850hp and 850.0002 hp? Is it significant to a human brain even though a $100,000 machine can measure it? Like a fur coat with one extra hair.

[@aussie8114]

@@jaydee6268 That’s actually not too far from wrong. I know a terribly measuring amp is likely going to sound a bit crap but who’s to say a fantastically measuring amp is going to sound better than a less well measuring amp. Musicality can benefit from certain types of distortion levels from my basic understanding. It’s a nice amp but when I look inside it I scratch my head trying to work out where my $6,000 is going. It sounded ok but not as nice as some others. Admittedly the others were a bit more pricey but there’s lots more stuff inside them 😂

[@jitrapornpha5104]

Which other reviewer would have the honesty to admit a capacitor popped ? thats why i trust Gene over all other reviewers

[@MrUttammaru]

Had C 368, Class D measurements are always good but music have missing essence of sound. Secondly at low volume Class D sounds more thin, like 80s tape recorder. Burnt hands sold and got pure analog Marantz PM 8006. At slow volume has all the weight and that HiFi essence.

[@molecularaudiocanada]

Very surprised. Speaker systems engineer back to say hello. I've spoken up a few times during the live casts. My late great uncle loved his NAD stack of components 90s era. It sure did sound clean with amazing attention to frequency balancing. No audible peaks with solid full range response paired with his pioneer towers. Your information here is prompting me take another look at NAD amplifiers.

[@Johnny5_Alive]

Nice Review Gene! I own the NAD M23 and it is a marvel for the price!! I recently modernized one of my sound systems and added this to a new Marantz Cinema 60 instead of a Mcintosh MX130 and Crown XTI 2002 for the TV room. The Cinema 60 has a completely silent preamp for 2 channel and 3.1 listening . Steve Gutenburg's review was quite positive also. For a musician that is chasing clarity and resolution, this amp is extremely impressive for listening to playback. I am not sure how many times I said WOW while listening but, WOW. Sources used so far, Tech SL1210GR/Grado/Elac PPA2, Nakamichi DR3, Sony X800M2. I have not had time to try Audio Physic and Sonus Faber speakers in the Bat Cave yet or other sources.

[@biggles5633]

I am just in the planning stages of putting together a modern higher end system than I have. I have had a magnificent Luxman integrated for more than 40 years and I love it and the sound it produces. I have the old English Mordaunt Short speakers which have been exceptional but they are getting very old now. I haven't used streaming yet, that's the next stage. I notice you mention Sonus Faber ... This is where I am leaning. The Olympica Nova III. I am sold on the M23 but I have no idea what to match it with as a preamp. Your suggestions please?

[@SirMountainpass]

@@biggles5633The M66 is its « natural » match… The combo is on my upgrade list.

[@rggoogle3795]

Hi Gene, what does it do into impedances below 4 ohm? (Many speakers dip down to 2 ohm at some frequencies.)

[@benjaminqilafku5714]

Gene, your mic is great. What a pleasure to watch your posts.

[@hypoSTAR]

Nice review Gene! Will you by any chance be measuring the anthem MCA amps? There specs seems to be very good!

[@Bob.martens]

RIP AB-class. You were so good to us all these years. The future is Class D. in ten, twenty years we'll be looking at AB amps like we're looking at tube-amps now: nice, charming, can be made to very high standard, but ultimately not competitive and inefficient. I love my Yamaha A-A1100 and my HarmanKardon PM650, but my next amp will be the AUDIOPHONICS HPA-S400ET or something along those likes.

[@koflerkohime2981]

I have the integrated M33. I've always assumed that the M23 power amp has close to the same specs. Is this true? There are some numbers different in the specs - not sure if they will mean much. I've also considered buying the M23 for bridging - but maybe I will not do that now 🙂

[@pengel9412]

Is the NAD master series 7 CHANNEL AMP as good as this 2 channel?

[@bradnoah6626]

Loved my old school M25. It weighed about 100lbs and was a beast. Sadly sold it and picked up an M27- class D amp from NAD. I was disappointed with the loss of warmth that all the power in the world couldn't bring back. I'd still like to hear this amplifier. Class D is evolving rapidly and no two methods seem to sound the same.

[@rickp6731]

What people in the USA doesn't know is Bladelius Audio is making the very best gear in the world right now

[@drde4010]

DId you ever do the listening test review yet? Couldn't find a link to an updated video on that. Really like your program and thanks for sharing. Keep up the great work!

[@radamesd81]

Class D is finally getting interesting... Looking forward to hear your impressions on the sound, Gene! Thx for the video!

[@florin604]

finally? did you live in a cave?

[@badtothebonne]

Ha Gene I was watching yr Nad amps video and since I've been watching yr videos for yrs and I remember when u did the tests on the yamaha ma 5000 amp and the 5000 reciver. I just happened to catch a snapped box they have at the warehouse it was basically brand new full warrenty for 1400.00 for the 11 channels to run off my x8500h for the upper channels and have some left. Question is on the nada u recamended not using it in bridge mode and the 5200 also has a bring mode. Now I use the emotiva xps gen 3 7chl for fronts. Would it be better to bridge the 5200 for frt R&L or keep the front 3 on the emotiva. Now im running polk Rti 9s with a Lsim 706c but after what polk did with the new speakers im going to run eather the Reserve 700s or legand 600s but im really leaning for the L800 after what James Larson said about them. Just not sure if they would do anything for 9,4,8 since this is really for theater. Sorry so long for a crazy question. I just feel yr the leader in this especially after what u just did with yr new home. Being 66 but disabled im trying to put the best an old broken down guy can afford. The funny part is right now I have both my indra and outdr speakers all polk now down to 59 all registered with polk is Evan more and I can't even get help from polk on the new set. Cant believe it Evan after I promote there speakers online. I guess i need to talk to Bronson the guy u interviewed when the new speakers came out. I think he has a killer name for his size just like u. Crazy. Sorry my friend so long

[@JosephTongret]

Gene, I have a question you may be able to answer for me. With the performance of today's class d amps, why don't we see them being used in AVR's? It would seem to make sense considering how small, light weight and efficient they are compared to class A/B. I know that Purifi would most likely be cost prohibitive but there are lower priced modules that still offer great performance. I know NAD has done it and Pioneer as well in past. Is it likely that we'll see this happen in your opinion? Thanks Gene!

[@mrwilliamwonder]

The are being used in AVR's for the surround channel amps and sub amps.

[@tritiumglo4699]

Intriguing! However, the newer the NAD the more unpredictable the reliability. I have racks of it. Cant keep the newer units off of the repair bench.

[@RowanTasmanian]

G'day Gene from Australia, I love your videos and they are a great help. Your advice on Room Treatment has been invaluable and I quote you guys extensively. Thank you for your honest evaluations.

[@neilfox4626]

Halcro "borrowed heavily" from Hegel's sound engine technology.

[@techsamurai11]

Gene, really interested in the last sentence that "we're living in a renaissance of Class D and DSP." The NAD and Technics are definitely indicators that Class D are going to be competing at the high end as is Marantz's $7,000 AMP10. Do you think we'll see them in $2-$3k AVR range replacing toroidal (which are quickly becoming extinct in the AVR market) and if so when? About DSP, perhaps you can elaborate on that in a future video. Is that essentially Dirac?

[@Audioholics]

Yes, and FIR based EQ.

[@f100cream]

With such high clean power combined with super low distortion and noise level, it would be a challenge to find a preamp that can even match it in noise and distortion level. This NAD class D amp may be screaming for a passive preamp, which would mean you'd need to use low-capacitance interconnect cables. Gene, thanks for another objective presentation. A lot of consumers need objective non-biased information like this.

[@Shoaibexpert]

Why would someone buy this if NAD C298 exists...it's the same purifi modules and is like maybe half... haven't checked the price...

[@Audioholics]

The C298 power supply is not as robust as the one in the M23. The build quality is much better on the M23 as well.

[@snodd8377]

How about the difference between the c298? I Have one and a nuprime 10h as preamp. Have to say it sounds really good! Maybe c298 strangly lacks some real depth and kick in the bass regio. Dont now why!

[@jkenefake]

Can't wait for the future of affordable high quality class D amps. I'd love to see you review the Monoprice Monolith class D's.

[@biggles5633]

Just new to the channel ... what extraordinary reviews! A bit above me in terms of technicality but I am a keen learner. Thank you.

[@ARMANDITOLEXUS]

Steve can you please advise me how NAD M28 compares to the Marantz AV-10? I’m in need of a quick advise since I need to order it one of the two asap. Thank you

[@Audiodreamer192-24]

That’s a super sweet piece of gear! Thanks Gene, for giving first class reliable advice and showcasing some very cool stuff! Your videos are better then the rest ! 🔊✌️🤟🍻

[@scottcarlon6318]

Was going to buy the anthem STR, but I think I’ll go with the NAD stack. Have an old Denon 4000 AVR that has to be close to 20 years old, but I have to say, It never let me down. Too bad Denon doesn’t make a competitive product, if they did I would buy it. The reliability of my old AVR as earned my loyalty, unfortunately Denon has not kept pase with the market. I think you will see Denon slowly fade away, the only thing that can save them imho is comon sense leadership, and from what I’ve seen, I’m not holding my breath.

[@alphaniner3770]

the first time I ever heard a real HiFi system was almost 35 years ago - it was playing Enya's Watermark. The amp was - indeed - a NAD.

[@andrewbrazier9664]

Nad 3010 🎶 per chance ? 😃

[@alphaniner3770]

@@andrewbrazier9664 I honestly do not remember. I only remember that it was black, NAD and the sound was something I never heard before. Probably it was a 3020 :o)

[@KXP70]

Hi Gene, do you think you'll get the chance to test Orchard Audios GAN class D power amps at any point?

[@lsd22252]

Take my money 🤑. NZ$6,499.00 retail in stock in New Zealand.

[@klxz79]

Any update on this? When will the listening impressions video be uploaded? Thanks

[@Clobercow1]

Incredible amp with really amazing gain in bridged. I doubt there is a speaker inefficient enough to make this thing stretch is legs.

[@AbsoluteFidelity]

There are floorstanders that actually need the capability of handling a 2 ohm load comfortably with the right amount of current needed.

[@carl3042]

@@AbsoluteFidelity Yes indeed... I have vintage Martin Logan CLS-II that I love dearly, but they present a load that varies from 1.5 to 30 ohms across their frequency range. Always on the hunt for amps that can drive current into 2 ohms comfortably and remain stable at 1 ohm within limits.

[@markbourcier1980]

Kind of a newbie question - is ultra-low distortion a desirable trait in an amp? Don't people buy tube amps because a particular distortion profile sounds good?

[@benwolfe1301]

If you want to listen to the recordings, yeah, you don't want distortion. If you want to 'enhance' the sound, some people will use tube amplifiers or pre-amps to add distortion and harmonics

[@kx8960]

I'd say absolutely, because then you can "color" the sound any way YOU like with different EQ settings and/or speakers, and not be stuck with an amp that colors the sound FOR you....and which you may not like or may not play nice with your speaker choice.

[@bingdong8571]

I saw u make a similar video recently with a "nad" amp, I wonder if its similar to this N.A.D. amp?

[@bobtowncarguy82]

That NAD amp is a beast, and has power for amost every speaker you want to drive.

[@deanedgx]

So I guess, if distortion, noise and any other unwanted artifacts are below the threshold of human hearing, we now have perfect amplifiers i.e. a wire with gain. Measurably it is not perfect of course but with respect to human limitations, it is essentially flawless.

[@5wavesup]

I own the NAD M10 and I love all of the features, but wondering if my Phil BMRs would benefit from more power...Not to mention the NAD M10 is being pushed pretty hard and would hate to see it die on me. What do you all think?

[@GamerWordDotNet]

I found Dennis Murphy (the BMR designer) mention on Audioholics "all you should need is an amp with 80 -100 wpc of clean power for medium rooms, and bit more for large rooms" Also from Avsforum "I think Praxis must have been having a bad day when I did my sensitivity measurements on the BMR. It's really closer to 89 dB.". Dennis found out recently that the BMR's are even more sensitive than what was originally tested.

[@HieuNguyen-dl5nd]

Does the purifi based M23 "sound" diffierent from the other Hypex Ncore which are close in term of measurement and specs?

[@benwolfe1301]

I can't say from personal experience (so feel free to disregard) but I'm guessing that the differences are probably very subtle, if they're even audible at all.

[@droidzhunterz6861]

Even marantz is moving to class D

[@a3marketing991]

What speakers might pair well with the M23?

[@MrAlb3rtazzo]

will it work with martin logam theos ? the go down to 0.6 ohm

[@mcbowler]

Apollon Audio and others also use purifi modules. There is even a 950 watt 2ohm version. All the amps I’ve had since I started 5 years ago are class d… they are getting better, maybe on top already.

[@sbwlearning1372]

Couldn't agree more. Got fed up with mainstream amp manufacturers telling me 80 or 100 wpc was "powerful" and would "drive any speaker" Total lies. Tried class D 3 years ago 600wpc icepower as1200 boards. The power amp I bought was a third of the price of my supposed hifi powerful amp. It's 5 times as good. It upgraded every single component of my system. It is the most significant upgrade I have ever purchased in 40 years of buying audio equipment. Sadly I notice some of the big manufacturers are using class D but still charging ( ridiculously) overpriced money for them. Being driven by a valve preamp, it is stunningly good. I'll never go back

[@AudioElectronicsChicago]

WOW

[@joshdekubber3631]

When will you have listening impressions vs Str power amp??? I'm interested in the Str power amp or Parasound Jc5 and wondering how they would compare to this M23? Any thoughts would be appreciated.

[@brianveldboom2269]

Listening to your review, this question comes to mind: What will the M23 sound like if you use 2 to bi-amp your speakers instead of bridging like a monoblock?

[@nebulusnebulus6503]

I wonder if this power amp could control my Pylon Amber mk2 speakers. They have double 12” drivers working 1250 hz below each tower

[@djlee688]

Gene, How about testing some ICEpower amplifier modules available from Parts Express, thanks.

[@drunvalo]

Curious if you have tried pairing any Nad M amp with Arendal 1723 speakers? If so, was it a good match?

[@terryeyland5305]

So I have a question that is pretty random. I have a room for my home cinema which is also my main listening room. Part of the time I listen to stereo music and part of the time I watch movies. I currently have a NAD 758V3i home theater amp that I was considering changing for the Anthem MRX1140... the alternative is to hook up a stereo power amplifier to the 758v3i like the M23 (or another) and use that to improve my stereo listening experience. What do you think Gene or others who played with either getting a higher end AV receiver versus connecting a stereo amp to the current av receiver? Cheers!

[@tee-jaythestereo-bargainph2120]

Gene cracks me up !! I don't wanna hear ' what does it sound like !! Thats Part 2 !

[@xray111xxx]

My biggest question is the trickle down process when would we see more of this in future NAD products more approachable for the rest of us. Nice work Gene.

[@davybloggs1564]

It is not the Class-D amplifier that makes this lightweight, it's the use of a SMPS, as it doesn't use a huge tranformer, which is where most of the weight is in a 'normal' LPS powered amplifier.

[@florinbizu7583]

Hi! In regarding low noise floor, low distortions - did you had the chance to test also Anthem Statement P2 or P5 power amplifiers?

[@majtextwriter1794]

At 4'40 GRR Danny would said, everything counts in a signal path 👍 WHERE IS A LINK about amp's negative feedbacks? Thank you. Quality review as usual👍

[@dirkluchtman]

Wonder what you think of the NAD T778 (class D AV receiver) compared to the Marantz 8015, since they cost approximately the same

[@Nick-sk1qp]

HI Gene, any chance of giving a hint when you plan to provide video M23 sound test? Lots out there waiting!

[@EnemyofCredulity]

I just saw a very positive audiophile review of this amp. 4 different sets of speakers (open baffle, two box speakers, and planar speakers) and compared to several amps.

[@william1252]

I can't seem to find any reviews on the class D Monoprice amps. I'd like to see an Audioholics review on them.

[@EB1000]

$3700 or a $400 per channel class-D modules is a ripoff and a scam! You can buy the Purifi modules + Hypex PSU + Eval1 board directly from Purifi and then get a case and cables from Ghent audio and spend 30 minutes assembling everything for less than $1000. I've built triple mono amps using Icepower 1200AS1 modules which are even better and cheaper than the Purifi. Using DIY class-D modules for a commercial amplifier is a pure scam!

[@epi2045]

Still don’t see where the ripoff or scam is. The DIY you advocate is $1,000 in parts and requires 30 mins of assembly. Using the same thinking, some would say that’s a ripoff too. This is audiophile gear, where the sum of the parts rarely add up.

[@evertdewit4037]

Never will a NAD sound better than an Accuphase !!!

[@andreasmoller9798]

No nad is not in same class at all, i know accuphase is top class, i use Hegel witch is not as good as accuphase but a lot better than nad

[@easykai3962]

@@andreasmoller9798 Nun dann hast du den Nad m33 noch nicht gehört.Ich habe mir den H390 vom Händler ausgeliehen .Der m33 ist viel dynamischer und hat einen wesentlich tieferen und besseren Bass! Der hegel h390 ist wieder zum Händler zurück;)

[@andreasmoller9798]

@@easykai3962 thats not my experince. I have h390 and it sounds better with my b&w 702 s2 campared to m33, h390 have a fuller sound more controll campared to m33. H390 is also more powerful than m33

[@easykai3962]

@@andreasmoller9798 Ja das kann ich verstehen, der H390 ist ein unglaublich gutes class AB Design.Auch fand ich die Bühne vom H390 wesentlich expansiver.Im gesamten war mir allerdings die Abstimmung etwas zu ruhig (langsam) Als ich den M33 dann wieder dran hatte, hatte ich sofort wieder Gänsehaut;) P:S Ein besser oder schlechter dieser beiden Amps gibt es nicht.Es ist tatsächlich eine Frage des Geschmacks

[@Echo-jg8is]

Youthman has recently featured 3 high-end and professionally designed systems priced around $100,00 to $250,00 one system using a budget-level Emotiva 7-channel amp, the others had similar mindsets as in that a Denon Avr was powering $50,000 speakers. Some ratios of around 33/1 between speaker price and amplifier price are very scary to me...could a Denon Avr amplifier outperform or compete with this NAD in a blind test ......

[@HiFinest343]

Would this amp perform better in a bi-amp configuration, rather than bridged?

[@De132an]

Do you think this NAD would with a tube preamp? Thank you. Would it’s lower input impedance be a problem?

[@bgroovin1343]

I can't find your listen review video on this amp. Did you ever make it?

[@stephencosta6814]

Please give us a review of this item what it sounds like. I’m waiting for you before I pull the trigger on it.

[@tommyK7282]

My dream amplifier. Wish I could own this at some point. 🎉

[@henriksrensen3220]

It's too revealing. I have heard it. It sounds great when recordings are perfect. But not many recordings are perfect. It was not my cup of tea.

[@jtmcfarland3512]

With that approach, you may as well just get an iPod.

[@henriksrensen3220]

@@jtmcfarland3512 i bought a Gryphon Diablo 120 amplifier. Much much better sound compared to the NAD

[@henriksrensen3220]

@@jtmcfarland3512 i bought a Gryphon Diablo 120 amplifier. Much much better sound than the NAD. Much more natural sounding

[@henriksrensen3220]

@@jtmcfarland3512 i bought the Gryphon Diablo 120 and it's much better than the NAD

[@SoundsGood07]

Hi Gene, You mention a listening test is upcoming, did you ever post one? Thanks

[@GuiltyRocker]

Bruno knows his stuff, will listen to it, we'll see how good it really is, the measurements are nice, but in the end it is the sound that matters and whether one likes it or not.

[@hclandscapes]

Would be great if you could review the NAD C399 and see how it compares to this amplifier.

[@Itagain2day]

Thank you

[@rangerscoach]

Really want the listening review for this amp. how it sounds is very important in light of these stellar reviews

[@bubbelchampagne]

Hi! When will the follow-up video about the GAIA with the measurements be published?

[@mrt6349]

How big is the difference from the nad m22.2 to the nad m23

[@mx96288]

afaik they had to design their own testing gear to get down to measuring said distortion levels

[@StereoWars]

Can't wait for how the amp sounds in your next video review @Gene

[@Tyrannosnorus]

I really hope to see that listening impressions video in the future.

[@fortuitousjimmy1341]

Would love to see you put the Enleum AMP-23R through its Pace's. Good job.

[@MrBoomtheroom]

where's the listening comparison?

[@pennyrambokumar]

where to get this amp? ebay??/ 4000 usd?

[@nebulusnebulus6503]

Could I use this amp with a tube pre-amp in a 2 channel hi-fi set up ?

[@triplecanopy5364]

Accuphase is the Japanese McIntosh (though better built), and now, via eBay, you can get them for about $1500 up. Buy an Accuphase P-300 on eBay for roughly half the price and as good of specs 150W (specs out at a 180 W per 8 Ohm's on bench, and .0.0 distortion), since 1975. Every time I have cleaned it, the shop wants to buy it off me. I got mine around 1983 for $200 bills off a Dental student playing the market and had to cover some puts and calls. Bought another off eBay for parts. Why don't we ever look at the used market for savings? Many shops will even warranty used stuff now. Much of it used audio for 50% to 70% off many times. Though the Accuphase did cost around $1000.00 in the early to mid-seventies. Two Kenwood engineers broke off and decided to make the best equipment (forget the cost) they could. Some pretty fantastic stuff when looking for stereo amps; the build quality is awe-inspiring.

[@Audioholics]

Just to be clear, no amplifier from 2 decades, let alone 4+ decades could come close to the noise and distortion performance of this amp.