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!


jays_audio_lab

Showing 45 responses by inna

Definitely prefer this to Fyne/Classe set up. I hear no 'stupidity' that comes from those.
Two thoughts. One - I think the Serblin speakers deserve better amplification and probably cabling too. Another - I personally don't understand the concept of bookshelf speakers except for monitoring.
Jay, there might be something else out there, probably there is, but tube equipment aside Magico M6 need either top Boulder or top Soulution.
D'Agostino might be preferable by some people, maybe, and Gryphon Mephisto might be alright, maybe.

I think, Wilsons are better speakers to compare amps. It appears that Magicos require more precise match. They sound out of tune with wrong amp.
That Gryphon vs Pass comparison might be a draw, just sound different.
Different approach.
I think, Boulder and Soulution aesthetically match M6 better than others, so they will sound best too.
M6 do appear to require exceptional amplification and not only to get the bass right. Coherence and realism are super.
I will rephrase that - there can be no perfect loudspeaker.
I thought that Soulution integrated was an excellent match for M6, just not enough current and power, and perhaps not quite enough resolution. The Magico definitely need a lot of power but that's not all.
The journey might be fun but the destination is almost certainly clear - Soulution and Boulder separates for M6. As for the best streamer/dac for them, that's another matter.
Jay, there are no challenges here and no commands. You sometimes seemingly overreact. But this is your thread, if you want me to stay quiet I will.

What a terrible singing, junk.
I think, the system needs a good active preamp no matter which power amp is there. It is always like that and everyone knows it. Gryphon needs better power cord. 
M6 are in pain because of substandard amplification.

I enjoy your pain, rbach, enjoy it too.
I am not complaining, I say what I think, not all of it though.
Surprisingly, I seem to like Gryphon's entry level amp more than Anthelion. Not enough for these speakers but I think it's a very good amp.
It is also educational to see how 700 wt/ch not a bad amp loses big time to 100 wt/ch class A amp. 
You might and almost certainly will lose some resolution with the inserted preamp but you will gain in everything else. Even at moderate levels.
So we are more or less in agreement.

Now, that's a real good match. I like Gryphon Essence amps, monos more than stereo.
Digital sucks big time, yuck.
Yeah, as heard on youtube that $700k system was not impressive at all.
Recording or room or whatever. More like $70k system, maybe.
I would compare Essence monos with Mephisto and Boulder. Pass would be fun to have as boat anchors.
It's incredible how much better the Essence monos are. 
Yeah, I got a budget too, can't afford this Gryphon. Who ever said that I was biased ? M6 - great speakers with the right amps.
I think, Jay did a great negative advertising for Pass Labs. All of them.
viber6, thank you for the advice. I am not going to upgrade for a few years. When I do I will probably go for either Gryphon Diablo 120 or Accuphase class A integrated. Both used. Or, if I am lucky for Accuphase separates. Different sound but I like both of those sounds. I don't spend too much on stereo, there are more important expenses.
This makes no sense to me, to keep Essence stereo not monos. Unless the idea is to almost exclusively deal with stereo amps. I am loosing interest in this endeavour.

Everyone watching that video figures out that Jay doesn't give a damn about Pass. And rightly so.
Battle of dacs should be interesting. I would add Gryphon dac, considering Gryphon amps will drive the speakers.
Yeah, but it is always like that with good speakers. You need equal or better everything else to make them sing. Including cables. With speakers like M6 it is just more so and a train load of cash. Or credit.
Gryphon Essence monos are about $50k, comparison with Soulution $170k monos would be helpful. What if the Gryphon wins or loses by very little, especially if the room is not too big and decibel level is not too high? Still, even if the Essence are enough you would have to spend a lot overall. $350k total for a system, I would guess, or more.
50% spending on speakers rule might work in this case and it might not, dac could be very expensive. With only analogue source..probably about the same, and with both analogue and digital sources - and that's how it should be if you are serious- it will surely go over the cost of M6.
I agree with Jay that you can possible get away with Wilsons by spending less, but still, if you want it done right it will be about the same. Boulders are not exactly inexpensive. Essence monos with Wilsons ? I have no idea.
I still think that analog source is in order, long overdue, in fact. Forgive me, but in many ways, that digital sound presented by $100k digital front end is ridiculous, very far from real. No speakers or amps can do anything about it.
No. Costellation is okay but Gryphon Essence is much better. It has a realistic dynamics and more convincing overall balance. Gryphon Essence monoblocks - bargain of the century.
And I think I prefer the M6. But the amps are different and I hate this song so much, it is also poorly recorded, that it doesn't make any difference for me.
Depends on the house and its location.
ricevs was very rude unfair and plain wrong. Except for one thing, sort of. Audiophiles are very much kids in a kindergarten. 
Yeah, M6/Essence monos sound better. More natural, deeper, less distortion. Closer to how it should be. Cost of this set-up sucks big time, the rest is fine.
Timbre is more life like, not what you mentioned. New speakers do appear to have higher resolution and slightly exaggerated dynamics. They somewhat spit the sound out at you. I cannot assess soundstage under these listening conditions . $10k bucks for them, fair price. $50k for Magico M6.
Well, no matter, we'll be listening to the new speakers. This is about amps comparison not speakers really. And I am surprised with Gryphon Essence monoblocks, they got it right in Denmark this time. They wanted to recreate the original first Gryphon class A amp and take it further. I didn't hear the original but this one sounds authentic to my ear. First thing you notice while listening is what annoys you. In this case, I didn't notice anything. 
Big Wilsons are great to compare electronics. Good move, Jay. Just give them Essence monos not stereo, quite a  difference, at least what I heard or thought I heard with M6. 
Viber, I disagree that comparing speakers is more interesting. Differences will be obvious, in a sense - nothing to compare.
Personally, I am interested in Essence/Boulder comparison. 
Yeah, situation with Soulution is clear, too bad.
No need for more or different speakers, I guess, these Wilsons will serve perfectly as full range monitors. I like the fact that Jay's room size is realistic, many people do or can have similar rooms.
So, up until now the best sounds were Wilson Alexx/Boulder monos and Magico M6/Gryphon Essence monos.
Let's see where it goes next. Just please stay with monoblocks, stereo has no place at this level, and in my mind - never.
That's a starting point, we go from there. 
I suggest we stop talking about Magico M6. Jay's got new speakers.
This sounds so terribly digital that I can't understand what this half a million dollar equipment is for.
But, regardless, I think the Wilsons are too forward, lack sufficient depth and there is too much energy in the upper half of the frequency range.
I like your previous Wilson Alexx speakers more, overall. 
Trying different cables is certainly a good idea and maybe the speakers need much more burn-in time.
Jay, we just said what we'd heard. No, it is not a matter of preference in this case, it is quite objective, I believe.
I also wonder if Gryphon/ Wilson is a good match. I remember I didn't really like even Mephisto with the Alexx. Perhaps Boulder or D'Agostino would be better.
Magico M6 don't require too expensive electronics, Gryphon Pandora/ Essence monos did very fine.

Just watched it. Now, this song I know very well.
Stabilized or not - no good.
Same song, totally different equipment. What do you think ? By the way, I used to use those cables, replaced them with Wywires Diamond.
This comparison is just for fun.

https://www.youtube.com/watch?v=3WclO86A4LQ


Yeah...$200k speakers with truck load of expensive electronics and cables..
Oh boy.

I doubt that Jay likes these Wilsons much so far but for now he has no choice, he has to like them.
I no longer look forward to dac comparison. Amplification and cabling must be sorted out first. We don't have an acceptable sound yet.
And I maintain a working theory that Wilson and Gryphon are not a good match, for whatever reasons.
As for many people on youtube saying how great the sound is, this is none of our concern. We are audiophiles with high standards and trained ears.
I have no idea. But I was quite happy with M6/Gryphon. I do prefer deep slightly on a dark side sound. If Mephisto or/and Boulders could do even better than Essence monos, then it would make me happier still. 

I think, the OP is losing control of this thread. And we don't see any new amps. Nothing really to talk about yet. 
I am sorry, Jay. This is called projection. You haven't contributed much lately, you are talking about yourself. 
First learn your manners then talk to me.
But this is your thread, so I will no longer participate or read it. Conduct it as you see fit.