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 You may not have done the ’AB’ that you suggest, listing to the Linn Majik with a top flite moving coil vs. the Linn Klimax with a moving magnet. However, i have actually done this ’AB’...and once again the Klimax sounds a lot better to my ears than the Majik model. Probably due to these factors...1) the moving magnet cartridge really was not that bad of a cartridge ( it was an AT design). 2) the speed accuracy was easily heard with the Radikal D power supply vs. the simple Majik power supply and 3) the arm on the Klimax ( the Ekos SE..an arm i am not particularly fond of ) was easily superior sounding to the old Jelco sourced arm on the Majik. ( I have not done this ’AB’ with the newer Krane arm). 4) the cartridge on the Majik arm..a Linn Kandid, was not really a great match for the Majik arm.

So, in this example, the Linn hierarchy was very easily heard to be correct, even though i know you would like that not to be the case.

OK, but in what specific ways did the Klimax TT + Majik cartridge sound "better" than Majik TT + Klimax cartridge? Did you listen at home, or a Linn dealer or a friend’s home? I have been fooled by listening anywhere except in my very familiar system at home. I can understand that a dramatically inferior TT + inferior tonearm using a detailed cartridge would sound worse than a superior TT + superior tonearm with a less detailed but reasonably decent cartridge. That’s kinda like 2 good factors against 1.

Regarding my experience with the bad SOTA Sapphire TT vs Linn Valhalla with my same great Alphason arm + Denon 305 moving coil cartridge, the SOTA was so muddy like a leaden elephant, that in this case I agree with Linn’s and your hierarchy. With my excellent Linn Valhalla vs Goldmund Studio TT’s, the reverse was true--detail on the Linn was slightly inferior to the Goldmund by X, using the same Alphason arm and Denon cartridge, but with other cartridges, the Linn + Alphason was far inferior by 100X to Linn + Alphason + the most detailed Denon 305 cartridge.

Another experience I told you about in the past, was that when my Denon 305 was younger, the Linn or the Goldmund TT’s with Alphason arm sounded 100X more detailed than my CD player on the same recording. But years later, when the Denon aged, the CD player was far more detailed. And yet, the aged Denon still plays music decently, so I haven’t been desperate to swap in my refurbished Denon. But the young vs old cartridge is like the life changing difference between the athlete before and after he fractures his hip.

The post by mglik above is most informative--

 

"IME, upgrading from my very good Myajima Shalabi cartridge to a Lyra Atlas SL was, by far, the greatest improvement ever."

So I conclude that sometimes the Linn hierarchy is correct, and other times the cartridge is most important. As far as Jay is concerned, he is getting the best of everything, as he usually does, so this debate doesn’t really matter. Still, I am questioning whether the Kronos TT + arm + euphonic Koetsu cartridge will bring the detail of his SOTA digital system, but I am very confident that the Kronos + arm + SOTA Lyra Atlas SL cartridge will blow away the digital system in nearly every sonic parameter. So I change my mind, and now advise Jay to get the very best cartridge. The increased cost of the Lyra Atlas SL over cheaper Lyra models will be amply revealed by the SOTA Kronos TT + arm. I also speculate that a $5K difference in cartridge cost will yield greater benefits than the $30K cost of the SOTA Taiko Extreme server.

Jay, I’ve following you for 5 years, and I have never before been as excited about your findings on your new vinyl endeavor. I predict this will be life changing for you. I can even imagine your daughter doing her own YT channel for kids on the glories of vinyl as she delicately does the setups.

Well folks, the time has arrived to unveil the most important and special component I’ve owned: THE G.O.A.T.

This is the one component that has transformed everything about my system. It has ZERO RIVALS in its path and it completely DEMOLISHES ANYTHING ELSE I’ve owned.

This is NEXT LEVEL and I’m very happy to bring it to you all

 

 

Fantastic, more food for thought, Jay.  Back to the source components as most critical.  First, the purity of the recording. Then the preamp, which the Boulder 3010 seems to offer the BEST clarity/transparency.  The 3010 seems to be the closest to the holy grail ideal of a straight wire with gain.  If there is more distortion in the early stages, then the perfect power amp will just amplify the garbage.  So I predict that the 3010 + your other amps will be better than the 2110 with the Boulder amp.  But if the other amp is quite euphonic and subtracts lots of detail (Constellation, Luxman, D'agostino, Pass), maybe not.  But with fairly neutral amps like the small Gryphon, Simaudio, the 3010 will be better than 2110 and Boulder amp.

All this will be even more eye-opening with your Kronos TT with especially the Lyra Atlas SL as likely the finest source for at least clarity/resolution.  Your system is at the highest level where each change results in even more dramatic improvements. This is why I changed my mind and recommended you spend the extra money on the finest cartridge you can find.  If you feel that the $140K is well worth the money for the improvements from the 3010, then much less money spent on the best cartridge will be worth it.  You will probably sell the 2110 preamp, which will give you plenty of cash to get a buffet of great cartridges which you will appreciate, plus get a great LP collection.

Looking forward to your next video on more insights about the differences between the 2110 and 3010 preamps.  Well done!

Most interesting at the highest level will be Boulder 3010 + 2160 vs 2110 + 3060.  All are highest quality neutral/revealing components.  As I understand the Boulder line, the 3060 has more power into class A than does the 2160.  But how close does the 2160 come to the 3060 amp at lower power where both would be fully in class A?  Assuming that the preamp is THE most important, I predict that 3010 + 2160 will be superior to 2110 + 3060 at low power, probably also at high power, for at least resolution/transparency, maybe even at high power full dynamics.  Maybe even the 3010 + affordable 1160 will beat the 2110 + 3060.