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!


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Showing 50 responses by carey1110

Viber6 YOU HIT THE NAIL ON THE HEAD!.  Putting together a system that you like is like being an a great cook selecting all the ingredients for exactly what makes music to YOUR ears, in your space and with your budget. It’s an art an takes a lot more skill and talent that assembling a predesigned system that was designed for what ever reason a manufacturer might have.  Don’t get locked into think the manufacturer way is the only way. It may work for you and it may not. Experiment that’s part of the fun. When you get it right it’s amazing and enjoyable. If your not enjoying it your doing something wrong.  

Absolutely the recording is the limiting factor here. Years ago recording were so limited that audio systems were being designed to smooth over these recording flaws especially at the beginning of digital. Since then recording processes have improved and audio design  moved in a different direction. That is to be more revealing. Now audio gear has surpassed the recording and is now able to reveal the flaws in the recording. Some recording companies go through a lot of effort to minimize these flaws but they a few. So yes the recording is always the limiting factor. This is why picking gear that presents the music in a way that bring the effect of live music to each us is very personal and different for all of us. No system will please everyone. It’s subjective. You opinion is you opinion what you like some one else may not. The way Viber describes his system makes me think I wouldn’t like it. However who knows what I might think if I actually heard it. Maybe the same lol! Or maybe not. ✌️

So if you use and iPad and headphones what the difference as long as you use headphones with it. 
If the system moves you Emotionally in the way live music does then you are there.  Hearing all the “music” is definitely what we want I agree. 
Two months on my Alexia 2s and I’m just starting to realize and anticipate what a difference 1 inch will make to the right, left, front,  back for each speaker etc. The skill comes when you can anticipate what the change will be before you do it, Im not quite there yet. So it does take a while to understand and learn what each movement will do , in your room, to your soundstage, tonal balance, Imaging,  bass response etc. Ie: Depending on your room moving the speaker an inch will effect everything slightly.  Sometimes slightly is all you need.   Ported speaker like dipoles can be tricky.  This is both science and art. The science part is easy but the  art of it takes time and  talent.  I’m still a novice but learning is the fun part. Whitecamaross has quite a challenge because he uses a lot of different cables and electronics which are other variables that can also affect speaker placement as well.  Takes time and work but the payoff is there. 
Clearthinker- I think you’ve mistaken this thread for another one. This thread has been continuous for some time. The last post before you was yesterday,  just to be clear. 
With the DAC direct all Gryphon cables and the Mephisto and the Maggie’s  this is the Best I have heard since the Mephisto was introduced. The vocals were rich, natural and full bodied with a big sound. Dynamics were good As far as I could tell given that song.  However I not that familiar with that piece of music Q&A Fink
Agreed 100%. However you can’t run those without room correction. The woofers are powered and must have room correction to blend with the panel. I expect you’ll see an improvement but probably not enough. 
Viber I consider a coloration as anything that alters or deviates from the original recording. However I think you mean anything that alters the original sound from live pre recording. Therefore there is no such thing as no coloration, the best we can do is minimize it.  Recording engineers are also handicapped by the monitors they use. 
Kren0006. Careful We are all limited to some extent in our knowledge of this hobby and to assume nobody knows more or less Is pointless. Viber May in fact know more about some things that WC. Let’s understand that our knowledge of each other is limited. All I know about Viber is that he is a musician and I value his perspective even if it’s different than mine. He’s familiar with what live music sounds like. I think WC would tell you the same thing. WC does have a lot of gear in his place so he does have a broad perspective in some regards but everyone doesn’t have the same goals and WC knows this.  Just saying be open to others opinions and you never know what you might learn something new.

So what happens when you plug in the preamp to the Stromtank?  Is it worse, better or same?

Bvdiman;  do powercords really make a difference in these. I have a pair of the old CLS 2s in the closest but I never had anything but the stock PCs on them. 

Viber I didn’t find the 2500 to be warmer. In fact I found the opposite to be true. The s1000 was less transparent and warmer that the 2500. Also the 2500 seemed to have greater clarity,  detail, dynamics maybe even more information if that’s possible, but musical at the same time.  Lower noise floor. Our different  experience seems odd. Maybe a YouTube glitch at the time IDK. 

It just an opinion on the the existing video. If you have any thoughts on the sound feel free to share. 
I just think it’s best if we give our opinions on the gear not each other. But that is Just my opinion 
Also interesting is that the article says Gryphon and Focal just missing the mark to be included. What is that?  They fit in the price bracket.   You know you just have to take these articles for what their worth.  We will never know all that influences a reviewer to choose a product.  The only reviewer that matters is you yourself. When it come down to it it’s you personal preference anyway. 
I wouldn’t worry about Wilson not receiving his recommendation. When you’re at to top there’s alway someone trying to take you down. Maybe he thought Wilson is so successful they don’t need any help. Wilson is Probably the best selling “High End” speaker in the US. People voted with their pocket book.  Wilson is up there because so many people love and enjoy them.  In fact so many companies compare their sound to bettering the Wilson as a goal to exceed.  Great company IMHO of course. 
WC True but as you’ve always said synergy between speakers and the system is so important regardless of how good the electronics are.
I agree with Kren0006 on this one. Not necessary to get into it with manufacturers. Making things sound bad of good at will is not the reputation you want.  You’ve always worked very hard to get the best from every piece you’ve ever had in there. That’s who you are and the way it should be. Keep up the good work
I like the glasses analogy. However I’d take it a step further with Viber6’s EQ. I’d say the EQ may act as a pair of prescription lenses. Perhaps Viber6 needs the EQ to tune the sound for his ears. Remember we all hear differently.  For him this works. Because without it the images are blurred and not as clear.  Maybe?

Nah, the Vivaldi Apex Dac is not six figures.  If not a speaker the only thing that can make that kind of difference is analog,  however I’d be surprised to see Jay do analog.  He said “component” so depends on weather or not that includes a speaker. If not a speaker I’d say a front end just not DCS. 

Really enjoyed the D’Agostino amps,  very musical and enjoyable. These would be my choice over the hyper detailed etched sound. I’m surprised you are mixing it with the Boulder. Didn’t you always say keeping the same manufactures together for better synergy.  Wonder how much better with the D’Agostino pre. Very very nice sound but I think you’ll find the matched setup to increase clarity. I based this on your past videos. 
Here we go again rating the person not the gear. Come on. If you just state your opinion about what you like Or dislike About the sound and Not about the person. Make any claim Or statement you want about the sound leave out the person. I could care less about what any of you think about each other but I do want to know you opinion on the gear and the sound. That’s where the value of this thread is. 
Viber-  the only thing I would say to that is:  that I feel if you’re trying to get as close to what live music sounds like Consider this. During the recording process you loose a lot so even if you hear everything on the recording you are still missing a lot. Things that will involve you emotionally like live music does may be gone. Maybe the preamp with help Return some things that were lost, like dynamics, soundstage,  harmonic overtones etc. Even tho they are synthetic they may have value in returning some of the emotional connection. After all isn’t that why we listen to music in the first place.  However if you go for just the facts you may loose something compared to the actual performance and the emotional connection.  If the recording is perfect you may get close however very few recordings are perfect. Personally I find a GOOD preamp is a lot more involving to me and a lot more pleasurable to listen to. So our preferences differ in that regard however I can appreciate you side as well. 
Wow!  Really you mean there are people buying and sellIng gear here on Audiogon.  Amazing! Lol!,
 Axememan- I agree,  you nailed it. Who cares if he sells it. What do you expect him to do. Keep it all,  stack it in a warehouse. Who on this sight isn’t buying and selling gear. Everyone is; that is what this site has always been about.  At least with WC You can hear it and get a good idea of what it’s like. Where is the problem?
Looks like you are taming the “ wild child”.  Just like a wild horse being broke  she’s starting to settle down a bit. Can’t wait to hear the next step. 
Just watched the video and I have to tell you that you have a great sound going on there. Very nice. Are you using a pre amp?  Sounds really good. Amazing detail and depth and character in the vocals is amazing.  What ever you are doing you are heading in the right direction. Good stuff 👍👍
The question becomes can a system be so resolving as to take the joy out of the music listening?  As the pleasure meter moves up with more resolution is there a point where it begins to move down if the resolution get beyond a certain point revealing the flaws of reproduced music.  Live music is the ultimate resolution but it comes with a pleasant emotional response. Live music is always our reference point isn’t it? I think Keeping this in mind will help when evaluating a system.  
The more you guys fuss about him the more you fuel his behavior. Don’t give attention to unwanted behavior. The best way to keep him off this thread ( if that’s what you want, personally I could care less)  is to not read or respond to his post. Plain and  simple. The constant on going Dialog about him is really Unbelievable. 
Techno I’m Not saying they are absolutely the best speaker in the world I’m just saying they never seemed a bad as you made them sound with Your earlier remark. Just saying that having owned them I can really appreciate what they do. Are they better that the Focal? Well I don’t know because I haven’t heard the Focal. I appreciate your opinion it just compels me to respond thats all. Not personal. 
Do you the Mcintosh C1100 and the 601s rival the top preamps and amps these days. Many cost much more than Mac. 
Good point Viber about the unamplified music as a reference.  Otherwise we’re just stating what flavor we like.  If you are trying to get close to what is real and true then you must know what that is. On the other side of the coin a persons preference may be to a certain style or genre that is always amplified which may be WCs preference. Can’t say that I’ve heard many violins or flutes on his videos. If that was his preference he might have a different speaker preference or entirely different system. Again personal taste.  BTW I love electrostats but not for every kind of music. 
I don’t have any experience with Vodoo adapters on powercords do you? Do they change things a lot?
Techno-  hearing protection is required in commercial airport as well and it’s still considered the #1 job for hearing loss. The same as the job you were doing in the AF.  I’m sure you suffered some loss. Hearing loss doesn’t always show up at first.  It’s cumulative and may not manifest itself until you get older. If you you worked on the flight line you were at high risk even with hearing protection. How long did you do that job?  However even if you have hearing loss you can probably still tell differences of stereo with in your limited bandwidth. 
Hearing protection was required In the AF  during The early eighties and before.  I’m a retired AF veteran and worked in the hospital where we  kept tabs on you guys as far as your hearIng  goes. 
Of the last two videos you just posted with the Maggie’s, I felt the the second one sounded better. Cleaner Clearer more relaxed sound.