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

When you get into the stratosphere area of High End Audio, there (in my opinion) isn't jaw dropping differences.  Differences yes, but jaw dropping?  not in my experience.

How long has the REF 10 been on the market?  Some people complain that Audio Research comes out with new stuff quite often and that may be the case for their lower high end or middle high end equipment.  But to beat the REF 10?  That they are probably finding is pretty hard to do.  Unless budget is unlimited and the selling price really over the top.

As usual, for most of us, price/budget is a factor.  So, demonstration equipment or used equipment is the way to go for some of us.  that typically means either 1) the previous owner found money enough to get that Maybach and will let the AMG or regular Mercedes go for a good price.  Same for audio equipment.  I've seen REF 10s on the used market for about $14,000.  Not bad considering it sells new (who buys retail?) for $30,000.  but, $14,000 is still a large chunk of change for most of us. 

but I tell you what, if and when I can justify (funny word in this hobby) the money for a REF 10, I'm grabbing it.  Can't believe I wrote that.

it is an absolutely wonderful pre-amp.  Also, there is no such thing as a thing being overpriced.

an item, any item is worth exactly what you are willing to pay for it.  If you aren't willing to pay that amount for something, then, to you, it isn't worth it.  But to some others, it may well be.  has nothing to do with you does it?

give credit where credit is due.  Audio Research makes some really nice equipment.  So do some others out there.  That is why this is such a great and interesting hobby.

I am interested in the large differences WC is hearing with the new amps over the Block amps.  The first question I would have is did you match volume levels before serious listening? 

Anyway, this is about WC's blog and journey through the many levels and categories of audio equipment.  This experience is unlike any I have seen or heard about other than reviewers in audio magazines.  Which, unfortunately, I have stopped believing most reviewers. 

but, if one can take a piece of equipment out of their system and place another into the same system and listen, that is the best way to do it.  Change only one thing, listen again and make a determination.

I did that going from my Audio Research SP 11, which with new tubes was really close to the REF 3.  then the REF 3, compared directly to a REF 5SE and a REF 6 at the same time.  Know what?  The REF 3 even today is a really great pre-amp.  The REF 5SE was better.  Jaw dropping better?  no.  The REF 6 better than the REF 5SE.  so I got one. 

I see a REF 10 on the horizon. But that will probably only happen if Audio Research comes out with some new fangled pre-amp better than the REF 10 (good luck with that) and people start off loading their REF 10s to get the newer pre-amp.

I am absolutely enjoying reading about WC's adventures.  But I can tell you right now that when he starts delving into Analog/Vinyl equipment.  Oh boy!!!!!

This is fun.

enjoy


Sorry, forgot point #2 in the third paragraph.

2) I found it at a store where I'm known as a good customer and the owner sells it to me for a really really good price.

enjoy

Why do so many people here get bothered when WC does not follow with their suggestions?  It's quite clear that he's doing mighty fine now.  Now that he has discovered the magic of tubes in the line stage and DAC and the benefits of various cables, all he has to do is work on some room layout/treatments, maybe get another dedicated circuit or two, he should be good for quite while.

As for Purist Dominus cables B and C, I ran a full setup of these, ICs, phono, multiple PCs, 9-10 years ago.  They were impressive in spacial cues, but detailed on the top or tonally coherent? ..... not even close!  A mix with Kubala Sosna Emotions helped to improve the tonal coherency but a follow-on discovery and trials with Stealth, Dream State, Silent Source and Jade Audio cables were vastly more detailed, coherent and more natural with 3D presentations.  Rather than push a highly dated Dominus, surely PAD has made much progress in the last decade with newer products.  After hearing so much detail since my Dominus days, I could never go back to those severely colored cables.

And Viber, you admitted that you have not heard a high performance DAC.  Unless you have a high performance phono playback setup, how can you possibly have any idea the performance of the Ref6 vs. Ref10, or their competition?  And unless you have directly compared the exact brand/model of single-ended vs. balanced ICs, in such a top performance system, how can you comment on the pros/cons of one type over another?   A product designer knows of the benefits or compromises that one cable type may compare to the other within his/her product line.  This will clearly not be universal across all components or systems.  

The odds are high that there is no Pass that offers better sound in most criteria than the Titan, Dag Progression monos, or even the Plinius.

How in the world can anybody make such a comment strictly based on WC's experience in only 2 days in his specific system and no direct experience of their own?  WHAT? Have you even heard 10% of the products you comment on here regularly?  And if so, how many have you lived with for any amount of time in your own system?
WC

I may have missed it but what is your room size and how far from the speakers is your listening position?

Russ
I like where we are finally headed with this thread. It was about time that we all get excited and curious as well and give their input making things interesting. This page has been one of the best pages in the last month or so. Let’s not get derailed and begin bickering please. Keep things flowing as they are.