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 roxy54

That doesn't really make sense. It sounds like you want to be on a never ending search for middle grade amps that don't really satisfy you as long as they are re-sellable. Why not find one that's really good, save up the funds for it and live happily ever after. The merry-go-round of components does get tiring after a while, and at some point, it will just be
different flavors of the same thing.
Not many are that big and heavy. I seem to remember Symphonic Line Kraft being about that big.
Geoffkait,
Listener fatigue doesn't have to come from distortion, it could simply be that the listener is tired of hearing the sounds of the music, whether or not they are distorted.
fsamb,
I have never heard those speakers, but if I needed speakers, I would by them without hearing them, because they are designed like my Klipsch Epics, but look better in some ways. the 215's are huge and mind boggling. They must sound fantastic. My speakers, which are same setup and efficiency work great with 8 watt 300b set as well as 100 watt class AB and 40 watt class A.

whitecamaross,

I'm surprised, like others, at some of the brands you have overlooked in solid state, and one is Lamm (it only uses one small tube). Another would be Balanced Audio Technology. Have you ever considered these brands?

whitecamaross,
At the level your system has reached, I think that top level ATC speakers would really take advantage of the great amplification that you are using and show things that even the Dynaudio Temptations are unable to do. I know that they are very good and you have a lot invested in them, it's just a thought for the future. The dome midrange in the ATC speakers is incomparable, as well as all of the other in-house manufactured drivers. The power and dynamics at high levels will make many other speakers sound pale, and their neutrality at any level is pretty rare. 

Well, you know that you'll get rid of it...it's just a question of how fast you get rid of it.
I think that the preamp is the face of the system, and the amp is the soul. Soul in this case being more important in our subliminal perception.
whitecamaross,
While you're experimenting with speakers, why not try one of the upper end horn speakers. If I read between the lines correctly, you value dynamics and a live feel. I believe a good horn speaker would really open your eyes and make some of the alternatives sound pale. I think that it should be a part of your investigation for your own sake.
The Pearls are very open and lifelike for sure. I haven't thought of them for a long time.
whitecamaross,
Interesting as well as enlightening for me to read your last post to miketuason. The comments that you made regarding various brands being mid-fi as opposed to high end really woke me up in a way.
You (seem) to view brands as a vertical continuum, bad at the bottom, mediocre in the middle and excellent at the top. There is certainly some element of truth in that. Those brands (or individual models from a brand) may exhibit noise, audible distortion or truncated high or low frequencies. Those things are measurable and obviously undesirable. 
As time has gone by though, I think that I have come to view it in a more horizontal way; that is, separate but equal. You mention the inferiority of McIntosh to several other brands for instance, but inferior (my word) in what way? For you, it may be a perceived lack of resolution let's say, but that slight lack of resolution may be exactly what makes it easier to listen to for another person. 
I think that particular post finally made me consciously aware that every component, but let's say amplifiers in this case, has a blend of audible characteristics that may appeal to an individual, and there is really no way to say which is "better", only which you think is better, which of course listeners of similar taste may agree with.
Finally, I should disclose first that I am a McIntosh amp user; (among others) but having said that, I think that it is a narrow view to believe that Mac users purchase them solely for the meters or appearance. I think that most of us enjoy the appearance of our gear, but I don't believe that many of us buy gear based solely on its appearance. 
Well, that response from whitecamaross seems to verify what I was saying in my last post. Always talking about good, better, best without quantifying why that is other than you like it best. It's not a scientific way of going about things, but then it shouldn't be. This is about enjoyment. My point is that I don't think brands that you don't like can necessarily be classified as mid-fi simply because you don't prefer their sound signature. I owned a Pass 250.5 and really disliked it, but that was just my taste. 

  "The new solid state preamp C52 is the beginning of a new story for McIntosh. It really can compete with the best pres out there."

techno_dude,
That's impossible.The experts just told us that Mac is mid-fi.

riaa,
While I like some Mac pieces, I'm actually not a "fanboy". Three years ago, I bought a used MC 452 and didn't like the way that it worked with my system. I used the money I sold it for to buy a 300b am that I still have. I also have a vintage Mac that use occasionally.
My point with whitcamaross was not to defend Mac, but to question the reasons that we dub a brand "mid-fi", and also to question what the actual meaning of that term is. Is it inferior performance, or just performance that its not to the listener's taste?
As far as your snarky comment is concerned, I have heard plenty of gear in my time.
wc,
So it seems that you are saying that you don't mind mid-fi in things other than amplifiers.
jetter,
Everything is part of the system, and if he does not recognize the value and contribution of things such as still points, then part of his system will remain "mid-fi" as he calls it.
"I heard that newer McIntoshes are rebadged marantz units with a few more upgrades?"

Talk about fake news...
corvette01,
Sorry, I didn't mean to be mysterious, but most people familiar with McIntosh know that they manufacture all of their stuff in Binghamton NY. They don't have a relationship with Marantz. 
grannyring and charles,
Well (and elegantly) stated as always. Seems obvious, yet we seem to need a reminder occasionally. Thank you.
John
riaa,
Yes. We see photos when a member posts a link to a photo on photobucket or a similar site. Haven't you seen that?
Yes Charles, I was being sarcastic because WC and RIAA had both proclaimed Mac to be mid-fi, but I guess the wallet doesn't lie!
p59teitel,Your are right about resale, but I also agree with jafox. A smaller Symphonic Line amplifier is the best solid state amp that I have ever heard. I don't know what their secret is, but they are really great. I can't imagine what those giant Kraft amps are like.
techno_dude,
Maybe so, but electrostatics have a much longer history than plasma TV’s, and whether or not you or others think they are inferior to the best dynamic designs, they have their fans, and likely always will.
I myself favor dynamic speakers.

viber6,
You made some excellent points. Bigger isn't always better; unless it's under the hood of a white Camaro SS.
There you go. It might be sooner than expected; and they would be a nice start.

"I’m not taking anybody’s 1974 horn speakers lol."

I'ts funny. Now that I understand the  type of sound you like; clear, impactful and dynamic, I can just envision you being delighted with a pair of high end horns, and asking yourself why you had never tried them before. Who knows, some day it might happen. 

mrdecibel,

I must (respectfully) disagree. (somewhat)

The directivity of horns may be wide; some more than others, but it is also controlled, and in my experience makes the room less of a problem. Those are big speakers though, and might be a problem in his room as you say. I'd still love to see WC try horns! No more amplifier headaches; just choose the one that has reasonable power and sounds best. 

dguitarnut,
Shadorne may have spoken in error, but he is far from a troll. He oftentimes offers useful experience and information; and as a comparatively new member to the forums, I think that your judgement is harsh and unwarranted.

riaa,

Sure, whatever you say. You make the same faulty argument as Viber. Anyone who likes Mac is either too poor to afford better, or just blissfully ignorant.

viber6,

I’m sure that I am not anywhere near you regarding intelligence or experience. (seriously) Having said that, I think that you just made two mistakes in your argument. Firstly, you state that most Macs are overpriced for what they are. Since "what they are" is subjective, their value to each owner will be different.

You then state that Mac lives by its glitzy appearance and marketing hype. That’s probably impossible for any brand of anything over the long haul, but it certainly is not true of McIntosh. I’ve seen giants fall in it’s wake in my system, and by the way, the meters annoy me a little.

Not all tube gear has poor resale value, and some of it is very reliable. My 300b amp has gone for years without maintenance; and speaking of poor resale value, look at Soulution for one.
rickdog,
That may be true, but neither of those amps would be of much use to WC unless he decides to experiment with more efficient speakers. (horns?)
riaa,
I can hardly believe what I'm about to say...but I agree with you completely! 
riaa,
Nothing brings people together like a common cause...and a little laughter. That was funny, thanks.
What happened to Albert Porter going to all the shows and taking photos for Audiogon? I miss that.
#1 sounded better. A bit more focused on the treble, and somehow more intimate.
I used to come to this thread to see what WC's latest discoveries were, and then I started getting bored. Now the most interesting thing on this thread are the fights between viber and riaa. Keep it coming guys!

I guess I misunderstood too. I thought you were going on to a new life on youtube.