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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Viber6. Guido and Technodude have their own agenda and want to impose it in this thread no matter what..... plug 2nd rate gear that no one wants to hear about or cares about. They have been asked politely to stop and they come back with renewed intensity. If any of this stuff was revolutionary it would have made an impact already like Schitt did with their entry level gear and their Yggdrasil Dac.
dguitarnut, 
I have no agenda since I am not in the audio business.  I just share my knowledge and experience to any who may be interested, similar to the goals of WC even though we respect each other's different tastes.  Guido does audio consulting professionally, but he is admired by all who interact with him.  If he has any agenda, which I doubt, he has the respect to be entitled to it, since his mission is to inform and discuss edge-of-the-art stuff with a sophisticated, gentlemanly perspective.  Techno_dude seems to be a music and equipment lover who just wants to share.  I have not met either Guido or techno, but I say we three are NOT trying "to IMPOSE anything in this thread no matter what."  Opinions are opinions, but you are DEAD WRONG to say what we discuss is "2nd rate gear that no one wants to hear about or cares about."  To borrow from the correct logic of RIAA, you cannot say this gear is 2nd rate if you have not personally heard it.  Then if "no one wants to hear about or cares about", how will they do the listening to prove that it is 2nd rate?  And "if any of this stuff was revolutionary it would have made an impact already"--Guido has mentioned his preliminary listening experience with the Merrill Elements--few have yet heard it, so how could it make an "impact already?"  Guido had the kindness to mention the Merrill's, so for you to accuse him of "plugging 2nd rate gear" shows a total lack of respect for his professional expertise and gentlemanly manner.  You fumble on your ignorance and lack of logic and respect.  Stick to your equipment comments, which are interesting.

Ah yes dguitarnut, I shall never deny that I hold preferences for a small handful of brands that I am intimately familiar with.... Nor do I apologize for not being apologetic about it.


While I will never assert that what I like is "the best", I will persist in asserting my right (be it Constitutional or otherwise) to outline my preferences, and the rationale behind it.


On the other hand, my nightly sleep is not remotely disturbed if you, or anyone else, for that matters, prefers, defends, or otherwise  listen to any other brand, model, class of operation, or even media.... And ignores anything I scribble on this or any other board, on any topic.... be it audio, high or low brass instruments, music interpretation and phylosophy, accessibility technologies, or... Pizza.


It's just that, I dwelling in a liberal democracy last I checked, self-appointed zampolitiks of any vintage I cheerily ignore.


Best regards, Guido

 


RIAA, you are partially correct to say that since I have no personal auditioning experience with Dag, my comments about the Dag stuff have no merit.  This is literally true, and I don't dispute that.  But you would agree that designers have their own personal sound preferences and technical approaches, so it is generally true that there is a "house sound" of any particular designer, unless he has discovered something truly revolutionary that he radically rethinks his approach.  Of course, there are at least subtle differences between 2 amps of any designer, but the basic house sound applies more often than not, subject to some differences.  I have read reviews of Merrill's established products, but it appears that he has spent several years doing a major redesign with new generation devices, so we should keep an open mind about his new stuff which may or may not exhibit similar characteristics to his older stuff.  He may still have his "house sound" but we won't know until we listen in our homes.  Both of us could be partially correct.  You might say there is no "house sound" and everything must be auditioned.  I say that there is usually a degree of "house sound" in every product, and I agree that it should still be auditioned to be more informed.  There is also the reality that nobody can audition everything, so reviews serve as a useful screening tool to find the few worthwhile products that should be auditioned, although there is the risk that something gets overlooked.  That's life, unfortunately.

However, to accuse me of "spreading false/inaccurate information"...and being "totally reckless and irresponsible" is wrong on your part.  When I have personally heard something I say so, and otherwise I have said "according to reviews" this is what the reviewer said.  I won't waste my time doing the due diligence on my exact language in these posts to provide confirmatory evidence, because I am not a lawyer hired at $500/hr to do this.  My general perspective is clear enough.  This is not a legal forum or trial trying to determine who is guilty or innocent, etc.  Get back to sharing your long, valuable experience with equipment, the audio industry, etc.  Most of us find this more important.
Viber and Guido, +1

(Wow , me having a personal agenda ? Funniest thing ever wrote about me... )

Some takes this thread a bit too seriously. Remember this is a hobby, we share the best we can. We are here to have fun. WC has created a very popular thread wich makes us reunite and discuss on his and our audio experiences. We don’t agree about everything, so what , imagine how dull it would be if we would all have the same opinion about every piece of gear...