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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
viber6
2,448 posts
 
lemonhaze,
You make valid points about how important everything in the phono chain is.  I am nearly as old as Mike Fremer and my extensive experience is consistent with his.  I had a Linn table with Alphason arm with my Denon 305 cartridge.  Nothing that expensive but great performance.  I then transferred the arm/cartridge to a SOTA (that's the brand name) table.  Then the sound became heavy, like lead, mushy and slow.  The Denon 305 was a fast, dry cartridge that was big in HF excitement and light in the bass.  So the sound was dominated by the SOTA table with its soft wooden plinth that made the sound heavy.  I recovered the exciting sound by going back to the Linn.  When I got the Goldmund Studio TT, its sound with the same arm/cartridge was more focused, but not as changed as when trying other cartridges.  Both Linn and Goldman are excellent tables, so at that level the cartridge takes on more importance.  I think Fremer was admitting that his $200,000 TT/arm didn't produce a life changing improvement like getting his choice cartridge.  In a later review, he praised the $6500 Rega 10 TT/arm plus $5000 Aphelion cartridge for its fast brilliant sound.  I might prefer the $2000 Apheta 2 cartridge.  Of course, the compliance of the cartridge has to be matched to the mass of the arm.  Think of the cartridge as a transducer like a speaker, which is more critical a factor than the electronics.  The best arm/TT may be considered like the invisible fingers of God spinning the TT and holding the cartridge in place.  The arm/TT is merely supportive of the cartridge which really produces the sound. 

By the way, to accuse me of just regurgitating old statements, is to not understand my musical expertise, both as an accomplished musician and experienced audiophile.  Please show the proper respect, thank you.
viber6
2,448 posts
 
WC,
I agree that the Momentum Integrated probably sounds better with more accuracy that the ARC Ref 10 plus Progression Monos.  The main reason is that the ARC is still tubey and sweetens the sound a bit even though you like that.  Dag is SS all the way with some but less, tendency to sweetness, according to some people.  Another factor is the general concept of integrated amps enabling you to eliminate interconnects which color the sound.  The best approach would be to get the passive Luminous for under $1000 or so, and plug into the power amp.  If the power amp has gain over 30 dB, the passive preamp would give as much volume as you would need for lots of music.  The Dags tend to have lower gain of 26 dB, so for some music you can still enjoy the pure sound of the Luminous, according to the experience of mrdecibel.  He and I agree that there is no active preamp that approaches the clarity of a passive. One of the models of Music First passive preamps has a switch for an extra 6 dB of gain.  I don't know how they do it, but I didn't hear any difference with or without the switches' 6 dB of gain.

By the way, your journey is not a one way street without freedom of U-turns.  It is all a moving target.  One day you will decide that you love the Avantgarde Trio horn speaker, and then you will want a low power amp with the purest sound, for example.  Only upon death is there no U-turn.  Keep your health, lose weight so that final event is FAR away.  Best wishes.
riaa_award_collectors_on_facebook's avatar
riaa_award_collectors_on_facebook
981 posts
 

I am the Great and Powerful Oz.

 I COMMAND you to listen to the sub $5000 gear I recommend otherwise I will endlessly bash you over the head with my expertise, wisdom, experience and washed up 65 year old Ears until the End of Days. I am the Truth, the whole truth and nothing but the TRUTH. Kneel Before me you unworthy, ungrateful SWINE and behold greatness the likes of which you have never seen. If I put my mind to it I could even cure Cancer all by myself...but I rather idle away my days plucking the poetic strings on the Violin I got from my local NYC Pawn Shop for $50. Its better than any Stradivarius I ever heard and Ive heard them all in the past 55 years. Dont tell me any different you young WHIPPERSNAPPERS. As a side note... I can walk on water too

mrdecibel
3,063 posts
 
Viber6, I never stated the Luminous is better than every preamp, as my preamps were only in the 6K and under range ( not that this means anything ), although I have heard higher priced units. Never heard the particular ARC preamp WC owns. I am extremely pleased with my Luminous unit, and cannot imagine an additional line stage being better, for me, and my system. A poster commented on my Dac, saying I am not getting all of the information on the recordings, which I disagree. My system just works well with passive. I have been at this long enough to know, why folks like tubes, do not like horns, prefer vinyl, etc. I still believe WC will not be happy with his new equipment, long term. He will know there is better out there, and he is on a mission. I have heard the AG trio on many occasions, and thought many times they were not at all coherent. Other times, they were amazing. There are some great horn hybrids I have listened to, but still prefer my Lascalas. Considering my Lascalas can fill an auditorium, eliminated all of their nasties, and supplementing the last octave with a pair of subs, I could not be happier. Enjoy ! MrD.
mrdecibel
3,063 posts
 
riaa, LMAO, Enjoy ! MrD.
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