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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
ron17
607 posts
 
From the beginning this thread has been more about equipment than music.  Automotive gear heads spend more time tinkering and working on their cars than driving them but cars are about driving...right?  

grey9hound, with all due respect, I don't think you get this thread.  
jays_audio_lab's avatar
jays_audio_lab OP
5,381 posts
 
It’s about the gear and not music. 300%. If you want to be enamored with music, thats called Pandora, spotify, tidal and qobuz.
I suspect I can now move on and continue my journey now that I have publicly made it clear that this is about my experience with THE GEAR and NOT the music ?
Do you now understand the thread greyhound?
Music is SECONDARY TO ME. I care to understand the gear FIRST.
To Ron17s point, I am a "car tweaker" who loves to try new wheels, exhaust, turbos, superchargers. I DO NOT spend time taking joy rides on weekends in the car. I am the guy who will be under the car looking at everything and seeing where I can make improvements to it.
Music is part of the tweaking only because I need to hear the components pros and cons. There is no other way for me to understand what happened to the sound unless I listen to some music. I spend 90% understanding the equipment and 10% listening as part of the exercise but not because I am extremely excited to sit there listening all time. I enjoy the occasional listening session until 2am but that is not my mission objective.

My M.O. is to be testing and trying until 2am. It is not to play albums for hours on end. I can do that in my car or at the gym while I do cardio for an hour.
I brought the ma252 for these reasons:
-to give THOSE OF YOU who play with gear that is more modestly priced a feel for what it does with something like the Alexia 2. This is something YOU WILL NEVER SEE DONE EVER. Any Alexia 2 owner wouldn't have a McIntosh ma252 to drive this Speaker but I did it to give you that exposure. Again, to do something that you don't see often

- I also wanted to hear a little bit of tubes with the Alexia because I am contemplating doing something with tubes but needed to answer a few questions to myself and this integrated allowed me to answer a few things. 

- lastly, I don't always have super expensive stuff. Please look back at my videos where you can see I've had different equipment levels. 

I’ve burned too much time explaining myself today. I’m going to go and be productive.

speedbump6
760 posts
 
Jetted, actually jay does ask for peoples opinions, and that’s a big part of what the thread it about. On the other hand what Ron said I believe is correct. If the equipment someone has dosnt get great marks compared to way more expensive equipment they take offense to it. I own some mac equipment, dosnt bother me in the least. What I own does fantastic at its price and for the purpose. I do not expect it to be compared favorably to my Soulution, or a Mephisto. Greyhound, because someone agrees with much of what Jay says dosnt make them a fan boy, nor should it be a negative. Just means they see things the same way, and I cannot count how many times jay has said that he is expressing his opinions, and that doesn’t mean it works the same for everyone. If the opinions are too diverse for anyone, I’d suggest finding a more entertaining thread. No one can police all the forum and try to control all the content they do not agree with.
viber6
2,444 posts
 
I agree with grey9hound that he is not here to criticize Jay or anyone else.  He seeks truth only.  He happens to believe that tubes offer a uniquely natural quality that eludes SS.  In my early days with SS, I thought they were unnatural, and I found tubes more lifelike.  I loved the Theta and ARC SP6B tube preamps.  I think that SS has made great strides, and now think that the best SS has overall advantages over tubes, but I respect where grey is coming from.  He probably would love to hear the $150K VAC 452 mono tubes, and so would I.  He might admit that he prefers them to his present more modestly priced tube amp.  But maybe not, the VAC may be too SS-ish for him, and decide that his present tube amp is best for him, regardless of price.
techno__dude
511 posts
 
Greyhound makes huge points.
Why bring the McIntosh 252 and resell it the same day ?
And then having to defend yourself in multiple posts like a devil in holy water ?

I really miss the point of this ? Isn’t this thread about trying the ultra high end gear or not ? Spending time with it ( a little at least) ? Really seems like the Mac is just too good to keep YouTubing it, compared to the big msrp Gryphon Mephisto... 
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