My Long List of Amplifiers and My Personal Review of Each!


So I have been in a long journey looking to find the best amplifiers for my martin logan montis. As you know, the match between an amplifier and speakers has to be a good "marriage" and needs to be blend exquisitely. Right now, I think I might have found the best sounding amplifier for martin logan. I have gone through approximately 34-36 amplifiers in the past 12 months. Some of these are:

Bryston ST, SST, SST2 series
NAD M25
PARASOUND HALO
PARASOUND CLASSIC
KRELL TAS
KRELL KAV 500
KRELL CHORUS
ROTEL RMB 1095
CLASSE CT 5300
CLASSE CA 2200
CLASSE CA 5200
MCINTOSH MC 205
CARY AUDIO CINEMA 7
OUTLAW AUDIO 755
LEXICON RX7
PASS LABS XA 30.8
BUTLER AUDIO 5150
ATI SIGNATURE SERIES 6005

With all that said, the amplifiers I mentioned above are the ones that in my opinion are worth mentioning. To make a long story short, there is NO 5 CHANNEL POWER AMP that sounds as good as a 3ch and 2ch amplifier combination. i have done both experiments and the truth is that YOU DO lose details and more channel separation,etc when you select a 5 channel power amplifier of any manufacturer.
My recollection of what each amp sounded like is as follows:

ATI SIGNATURE SERIES 6005 (great power and amazing soundstage. Very low noise floor, BUT this amplifiers NEEDS TO BE cranked up in order to fully enjoy it. If you like listening at low volume levels or somewhat moderate, you are wasting your time here. This amp won’t sound any different than many other brands out there at this volume. The bass is great, good highs although they are a bit bright for my taste)

NAD M25 (very smooth, powerful, but somewhat thin sounding as far as bass goes)
Bryston sst2(detailed, good soundstage, good power, but can be a little forward with certain speakers which could make them ear fatiguing at loud volumes)

Krell (fast sounding, nice bass attack, nice highs, but some detail does get lost with certain speakers)

rotel (good amp for the money, but too bright in my opinion)

cary audio (good sound overall, very musical, but it didn’t have enough oomph)

parasound halo (good detail, great bass, but it still holds back some background detail that i can hear in others)

lexicon (very laid back and smooth. huge power, but if you like more detail or crisper highs, this amp will disappoint you)

McIntosh mc205 (probably the worst multichannel amp given its price point. it was too thin sounding, had detail but lacked bass.

butler audio (good amplifier. very warm and smooth sweet sounding. i think for the money, this is a better amp than the parasound a51)

pass labs (very VERY musical with excellent bass control. You can listen to this for hours and hours without getting ear fatigue. however, it DOES NOT do well in home theater applications if all you have is a 2 channel set up for movies. The midrange gets somewhat "muddy" or very weak sounding that you find yourself trying to turn it up.

classe audio (best amplifier for multi channel applications. i simply COULDNT FIND a better multi channel amplifier PERIOD. IT has amazing smoothness, amazing power and good bass control although i would say krell has much better bass control)

Update: The reviews above were done in January 2015. Below is my newest update as of October 2016:



PS AUDIO BHK 300 MONOBLOCKS: Amazing amps. Tons of detail and really amazing midrange. the bass is amazing too, but the one thing i will say is that those of you with speakers efficiency of 87db and below you will not have all the "loudness" that you may want from time to time. These amps go into protection mode when using a speaker such as the Salon, but only at very loud levels. Maybe 97db and above. If you don’t listen to extreme crazy levels, these amps will please you in every way.

Plinius Odeon 7 channel amp: This is THE BEST multichannel amp i have ever owned. Far , but FAR SUPERIOR to any other multichannel amp i have owned. In my opinion it destroyed all of the multichannel amps i mentioned above and below. The Odeon is an amp that is in a different tier group and it is in a league of its own. Amazing bass, treble and it made my center channel sound more articulate than ever before. The voices where never scrambled with the action scenes. It just separated everything very nicely.

Theta Dreadnaught D: Good detailed amp. Looks very elegant, has a pleasant sound, but i found it a tad too bright for my taste. I thought it was also somewhat "thin" sounding lacking body to the music. could be that it is because it is class d?

Krell Duo 300: Good amp. Nice and detailed with enough power to handle most speakers out there. I found that it does have a very nice "3d" sound through my electrostatics. Nothing to fault here on this amp.
Mark Levinson 532H: Great 2 channel amp. Lots of detail, amazing midrange which is what Mark Levinson is known for. It sounds very holographic and will please those of you looking for more detail and a better midrange. As far as bass, it is there, but it is not going to give you the slam of a pass labs 350.5 or JC1s for example. It is great for those that appreciate classical music, instrumental, etc, but not those of you who love tons of deep bass.

 It is articulate sounding too
Krell 7200: Plenty of detail and enough power for most people. i found that my rear speakers contained more information after installed this amp. One thing that i hated is that you must use xlr cables with this amp or else you lose most of its sound performance when using RCA’s.

Krell 402e: Great amp. Very powerful and will handle any speaker you wish. Power is incredible and with great detail. That said, i didn’t get all the bass that most reviewers mentioned. I thought it was "ok" in regards to bass. It was there, but it didn’t slam me to my listening chair.

Bryston 4B3: Good amp with a complete sound. I think this amp is more laid back than the SST2 version. I think those of you who found the SST2 version of this amp a little too forward with your speakers will definitely benefit from this amp’s warmth. Bryston has gone towards the "warm" side in my opinion with their new SST3 series. As always, they are built like tanks. I wouldn’t call this amp tube-like, but rather closer to what the classe audio delta 2 series sound like which is on the warm side of things.

Parasound JC1s: Good powerful amps. Amazing low end punch (far superior bass than the 402e). This amp is the amp that i consider complete from top to bottom in regards to sound. Nothing is lacking other than perhaps a nicer chassis. Parasound needs to rework their external appearance when they introduce new amps. This amp would sell much more if it had a revised external appearance because the sound is a great bang for the money. It made my 800 Nautilus scream and slam. Again, amazing low end punch.

Simaudio W7: Good detailed amp. This amp reminds me a lot of the Mark Levinson 532h. Great detail and very articulate. I think this amp will go well with bookshelves that are ported in order to compensate for what it lacks when it comes to the bass. That doesn’t mean it has no bass, but when it is no Parasound JC1 either.
Pass labs 350.5: Wow, where do i begin? maybe my first time around with the xa30.8 wasn’t as special as it was with this monster 350.5. It is just SPECTACULAR sounding with my electrostatics. The bass was THE BEST BASS i have ever heard from ANY amp period. The only amp that comes close would be the jC1s. It made me check my settings to make sure the bass was not boosted and kept making my jaw drop each time i heard it. It totally destroyed the krell 402e in every regard. The krell sounded too "flat" when compared to this amp. This amp had amazing mirange with great detail up top. In my opinion, this amp is the best bang for the money. i loved this amp so much that i ended up buying the amp that follows below.

Pass labs 250.8: What can i say here. This is THE BEST STEREO AMP i have ever heard. This amp destroys all the amps i have listed above today to include the pass labs 350.5. It is a refined 350.5 amp. It has more 3d sound which is something the 350.5 lacked. It has a level of detail that i really have never experienced before and the bass was amazing as well. I really thought it was the most complete power amplifier i have ever heard HANDS DOWN. To me, this is a benchmark of an amplifier. This is the amp that others should be judged by. NOTHING is lacking and right now it is the #1 amplifier that i have ever owned.

My current amps are Mcintosh MC601s: i decided to give these 601s a try and they don’t disappoint. They have great detail, HUGE soundstage, MASSIVE power and great midrange/highs. The bass is great, but it is no pass labs 250.8 or 350.5. As far as looks, these are the best looking amps i have ever owned. No contest there. i gotta be honest with you all, i never bought mcintosh monos before because i wasn’t really "wowed" by the mc452, but it could have been also because at that time i was using a processor as a preamp which i no longer do. Today, i own the Mcintosh C1100 2 chassis tube preamp which sounds unbelievable. All the amps i just described above have been amps that i auditioned with the C1100 as a preamp. The MC601s sound great without a doubt, but i will say that if you are looking for THE BEST sound for the money, these would not be it. However, Mcintosh remains UNMATCHED when it comes to looks and also resale value. Every other amp above depreciates much faster than Mcintosh.

That said, my future purchase (when i can find a steal of a deal) will be the Pass labs 350.8. I am tempted to make a preliminary statement which is that i feel this amp could be THE BEST stereo amp under 30k dollars. Again, i will be able to say more and confirm once i own it. I hope this update can help you all in your buying decisions!


128x128jays_audio_lab

Jay,

What is your schedule for putting the Magico videos (especially, your interview with Alon) on YouTube?

Thank you!

@kren0006 ​​​​​​

Thanks for the comment above. Unfortunately don’t be surprised if it gets deleted because you are speaking the truth

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@jays_audio_lab Audiogon is not what it used to be. You better put your time and knowledge into some where else.

jays_audio_lab

I wish I could defend myself on here ...  I won’t embark on duking it out with anyone ... I have to let the moderators do their job

I've found the moderators here to be very fair and I think everyone here is free to defend themselves. There's no reason you should be subject to any attacks and you should feel free to correct any misstatement.

I'd be very surprised if the moderators were unwilling to delete any false statements made about you. You might have to alert them to the problem first, though.

I wish I could defend myself on here, but as I continue to grow I have to unfortunately let the "narrators" create their stories for the masses since that is really the only thing they can do.

I said it before, I won’t embark on duking it out with anyone. I never win either way and have more to lose.

That said, I have to let the moderators do their job when false statements like the one above "promoting magico speakers and getting paid" are being spread throughout. This is FALSE, with ZERO PROOF and will be addressed by the moderators. I am done having to explain myself as if my life depended on it.

If you are going to disclose something about me, make sure you have FACTS and PROOF of what is coming out of your mouth or else people can see that you are simply fabricating things to bring attention to yourself. 

 

 

 

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@zprr Well I think an ad is only that if you are selling something. So as this is worded I’d say yes it’s allowed. The OP is doing the same thing. So I’d say what’s ok for one is ok for all. Technically if your selling an item you should place your ad in the for sale section. Hope this helps. BTW he’s  not doing the dealer any favors by announcing to the world that this dealer discounts. Manufacturers kinda frown on that.

are straight up ads allowed like that last post on agon onto established threads? honest question

 

 

What I find very lacking to many is knowledge of the verygood U.S.A made Coda 

electronics ,they are leaders in many areas ,priced great and up there with PassLabs  but have their own Sonic signature . What many don’t know is that 

Nelson Pass started here when they were a team at Threshold  ,then Nelson 

wantedtostarthis own company backin the90s . I have their latest CSIB integrated amp it is excellent., it comes in 3 power choices as with theAmplifiers 

the lowest power gives 18 first watts in pure class A, then 150,300, 600 wpc 

then 2 other higher power options ,they use Mosfets,fet and 40 high current bipolor s on the output end , class leading up to 120 short term amps , and a 

potted 3,000 Va toroidal transformer , no one comes close and for under $7k unheard of ,and agreat linear electric Burr Brown volume attenuator 

10 year warranty, 5 year transferrable I just thought I would share this .

I purchased mine from Mike  at Audio Arcon ,a very good dealer and fair pricing not full retail like some.which makes it an even better buy.

@viber6 ,

Was your last post directed at me?

If it was, I fail to see how you failed to see that I am agreeing with you.

@viber6

This respectful dialogue is beyond your comprehension, so ignore and bud out.

The amount of nonsense you are spewing is indeed beyond my comprehension
( including the ’respectful’ ending of your reply).
At least try and get your story strait, is it electrostatic or is it plasma??
Not sure why you insist talking about stuff you have no knowledge of. Stick to impressionism, then you can get away with anything ;)

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Can you think of a more perfect transducer than the plasma?  Semantics--"purest" means the best in existence, not necessarily "perfect,"  Let's get practical.  What driver principle is in your speakers?

It is easier to make accusations of "wrong" than to come up with advancements of real value.  

henry201,

The purest transducer is the massless plasma driver, but it is impractical to use below about 500 Hz.  The next best is the electrostatic driver, nearly massless, and better controlled than any dynamic driver either in a box or open baffle. To get a reasonable SPL and bass extension, they need enough panel area.  As I posted, all ESL's have flawed implementation of the electrostatic principle.  My concept of the best implementation is a concave spherically curved panel or a concave version of Soundlab's small cells in a spherical concave configuration. The radius of curvature is the listening distance, which would be adjusted to suit the distance.  The result would be equal arrival times and full HF response without smearing from all parts of the panel.  Reasonable bass extension would be achieved with enough panel area. The listener must be in the tiny sweet spot for full appreciation.  

rbach,

This respectful dialogue is beyond your comprehension, so ignore and bud out. 

The electrostatic principle is the purest transducer

No it is not. There is no such thing as "purest transducer"; electrostatic elements have their pros and cons, just like any other transducer principle.

Wilson, Focal, Magico (M9 only) speakers’ drivers are concavely directed for perfect time alignment.

Wrong again. None of these are time aligned.

The electrostatic principle is the purest transducer, but almost all stat speakers are badly implemented. Large convex curved diaphragms radiate to the listener varying degrees of HF rolloff. None of them are time aligned. A total hodgepodge. My Audiostatic 240 speakers are the least flawed, although not perfect. The 2 skinny flat panels per side can be rotated to directly radiate to the listener without HF rolloff. The medium height of 48" provides better focus than the large Soundlabs and Martin Logans. I use only one panel per side, for the best focus and clarity. It could be improved with vertical concave curvature for perfect time alignment. Wilson, Focal, Magico (M9 only) speakers’ drivers are concavely directed for perfect time alignment.

Perhaps, but they come with their own plethora of issues and, as you mentioned, limited dynamics. They are also, indeed, colored. I clearly hear a plastic sheen ridding on the music. Not a perfect nor preferable solution either, IMO

Right.  Magico cones are stiffer than Harbeth's.  But no dynamic driver cones are as rigidly controlled as electrostatic membranes which are in a tight, narrow sandwich between stators.  The drawback of electrostatic membranes is the smaller excursion which limits macrodynamics.  Rigid control and lowest mass give electrostatics the highest accuracy and lowest coloration within their dynamic limits.

@viber6

Both the Harbeth and Magico videos show the importance of stiff drivers.

LOL, Harbeth stiff?? The cone is made of injected molding plastic, it might be more rigid than polypropylene, but stiff it is not. The guy is bending it with his fingers, I don’t think he understands the meaning of stiffness. I don’t think you can bend a Magico cone that easily 🙄

Harbeth are fine for what they are but have not much in common with Magico.

 

@cleeds I understand what you saying and yes nothing wrong with Jay being paid. I’m just saying that this is not the case here with Mágico that’s all.  Jay wants to give an honest review and factory tour  with no obligation to sugar coat anything or any appearance of bias. This is just to show us about the company that built his speaker.  Therefore I’d be willing to bet He hasn’t received a dime from Mágico.  

Both the Harbeth and Magico videos show the importance of stiff drivers.  With Harbeth, the enclosure is seen as a less important factor, whereas with Magico, similar high quality drivers are in the S and M series.  The biggest differences with big price differences are seen in the enclosures.  Let's see what else we learn from Jay's interview with Alon Wolf.

What's the big deal? If Jay is doing these videos for free, he can just say so and I think most of us would be willing to take him at his word. But Jay has made it clear that he's a dealer working for profit. There's nothing disrespectful about noting that.

Agree. Most of us are here, and many for over 4 years, for Jay’s content and by extension support for his thread. Jay has always been transparent and upfront.

Gratuitous attempts to undermine his hard work and insinuate false narratives epitomizes disrespect toward the spirit of Jay’s journey and should have no place here. 

@rbach +1

To state that you think Magico is paying for its coverage on these web sites is also saying Jay is being paid for the video tour and interview.  I find that accusatory and rude behavior.

Pretty cool how @clearthink ​​​​​​ is doing his thing on here huh?

 

@rbach ​​​​​​

I appreciate your comment above. Thank you for the support you and others who believe in what i do display on here (I know there are many of you who stand behind my work)

The factory tour was more than what I expected . Alon and his staff were absolutely phenomenal and very welcoming to me and my wife who was there to work the cameras. By the way, Alon makes an amazing cappuccino too!

Anyhow, I managed to record about 3 hours of total footage so I will break it up into several videos. All footage was done in 4k @ 60fps and I used a great wireless lavalier on him and me so the sound of our conversations was clear even through the station where the CNC machines were building new cabinets.

Stay tuned guys - I thank you for your patience.

 

After years of building Jay's forum thread and YouTube channel he gets invited to tour the Magico factory and interview Alon Wolf.  He is having technical difficulties uploading the content so we can all watch.  So what does clearthink do?  He posts a video tour of the Magico factory (from a competing audio YouTube influencer) on Jay's own forum thread.  Way to go clearthink.  You are a class act.

carey1110

As far as Mágico paying YouTubers I doubt that. By the time Jay produces this video I’d bet it has cost him quite a bit.

Using paid "social media influencers" on Youtube, Facebook, and other social media sites is exactly how a lot of advertising is done today. Jay probably does have costs associated with producing the videos, which makes it all the more likely that he's being paid. There's nothing wrong with that and Jay has made it clear that as a dealer, he's in this for profit.

Very interesting how different the philosophies can be between speaker manufacturers. However Mágico and Harbeth total opposites in terms of everything from materials to costs. Hardly a comparison. As far as bang for the buck well that is even questionable as well. As far as Mágico paying YouTubers I doubt that. By the time Jay produces this video I’d bet it has cost him quite a bit. 

It is interesting how different manufacturers use different approaches to achive results that are comparable.

@J_A_L

Looking forward to your impressions of the Pilium electronics, if they are driving the M9's.

viber6

Right.  For the whole system including amps, the Stromtank 5000 is needed, at around $50K ...

Whoa, that's really wild. You might be able to get into a Tesla Powerwall for that kind of money. It's sure easy to see why some are exploring DIY options.

@johnread57 - Jay has not tried Pillium electronics, I recall him being asked on an earlier video.

Pilium are the best amps I heard. The Achilles and it’s preamp. I liked them bette than Audionet Heisenberg amps and Stern preamp. They give you the advantages of sounding perfect…imagine a solid state amp with the liquidity of a tube amp and non of the drawbacks that never ever runs out of gas and all the advantages of solid state without ever sounding dry.

no other amps do this. Their integrated amps are also amazing and basically separates in one 220 pound box with 4 transformers. I am saving for the Leonidas and it is the best integrated I ever heard.


 

Viber,

What a short memory.....I have already described how I used my inverter for the front end and added the amp for much better sound (even though the bass was inferior due to the wimpy inferior 400 watt inverter being used).

I don’t think the Stromtanks are split phase 240V....which is what the Boulder needs. The Stromtank S2500 is rated to put out 550 watts continuous. The big Giandel system ($3K) can put out 3000+ watts all day.

My friend with the Gaindel system brought his Puritan 156 over to my house yesterday and I installed burned in Furutech outlets and Inlet using cryoed VH Audio wire. Here is his email I just received:

 

 

Short version after Furutech install: another big improvement due to the lowering of noise

greater purity of tone
timbre more beautiful but not colored
wider soundstage
great micro dynamics, harmonic shadings, instrumental shiftings
better focus
greater dimensionality


The above is from listening to vinyl only. And there are some negatives….I am hearing everything on the record, so any distortion/noise from previous plays, bad pressing, poor recording….all is only more vivid!!

One example: I have been using this Roberta Flack record (vocal, spanish guitar, bass, percussion, few strings) as a demo disc for listening for changes in sound quality because I thought it sounded good……and that was a mistake, because of how clearly I can now hear its poor scratchy condition AND its just so-so recording quality. Oh well….

 

 

I am now of the opinion that using a big Giandel Inverter with a modded Puritian 156, and a separate ground rod and Puritian ground filter are the most important things you can do to create a serious stereo. This super pure AC and grounding with more modest stereo equipment would beat super gear running on the AC with audiophile line filtering.....I have no doubt. Jay could add a modded Puritan after his Stromtank and his mind would be blown. I have decided to mod Puritans for those that want the best sound possible. You can never lower the noise enough.

Cleeds,

Right.  For the whole system including amps, the Stromtank 5000 is needed, at around $50K, my guess.  Nobody knows whether the power amp will benefit as much as low level electronics.  

In general, sources like DAC's, TT systems with phono preamps which are low power are the most critical component.  This is because whatever low amplitude powerline distortions are present, they are a much larger fraction of low power electronics than high power electronics.  If you try to thread a needle and you miss by a tiny 1 mm, you might as well be a mile off.  Still, it would be interesting for someone who owns a battery/inverter to do this experiment first with low power components, then add in the high power components to see if my theory is correct.

Jay, you can add your power amp to the S 2500, listen at modest levels so the S 2500 can handle the whole system, and then report your findings.

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After several years of use all your power cords and the outlets/wall wiring will start to lose phlogiston. The result will be flat, uninvolving sound. You will begin to wonder where the "magic" went! Since phlogiston cannot be replaced the only solution is to replace all power cords, outlets and wall wiring. Don't forget burn-in to align the metal atoms!

I don't believe WC mentioned anything about an arc welder.  Sounds like something someone has fabricated.  In fact, this whole A/C thing seems fabricated.  

Sorry, I'm not buying it.

Dave