2. amps-preamps
  3. 126624-10101

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
jays_audio_lab's avatar
jays_audio_lab OP
5,381 posts
 
Yep, preferences are key and I agree with you ricred.
One thing I can say though is that the ref10 might be the most incredible component I’ve owned. I don’t dare to sell it even if i choose an integrated in the meantime, I’d still keep the ref10 in the box. It would take one hell of a preamp for me to replace the ref10.
Block audio and Rowland 925s are the top 2 amps in my book. I would love to do a shootout and see who wins. 
jays_audio_lab's avatar
jays_audio_lab OP
5,381 posts
 
Alright guys,
i added 11 pictures to my virtual system so you all can see the transition that my set up has gone through. You can see pictures of my previous room with wood floor as well. Lastly, someone had asked about the tubes that my ref10 had so I took a picture of it and posted it as well. That specific tube type did not do anything for me in terms of sound. 
Anyhow enjoy the pics of some of the gear I’ve reviewed. 
bigddesign3
237 posts
 
Those new pics are great! I remember reading about all that equipment. Those Neoliths are just incredible, compared to the other speakers. And I see you are pointing them now less toed-in than the initial setting. I think that was really needed to get that 3D Holographic sound you are getting now. You are such a stoker WC.

I, of course have a couple of suggestions..... but I will start with just one at a time.
I have a Microsoft Surface clone that I have on a glass and aluminum end table that fits the laptop right next to me. It is a touchscreen, and I don't have the keyboard connected, So basically, I can sit there and control my Music or Tidal. I bought an Audioquest USB 12ft cord initially, and it was just a little short to me. So I bought one of the better Audioquest USB cords at 5 meters (15ft), and it had more than enough length to reach my equipment. After hearing from a Doctor that does Medical Imaging... he has tested many USB cables at 5 meters, and the better Audioquests are the best and most reliable for getting the proper signal at that length. Many cables he tested, would not work with his Medical equipment reliably. So a proper 5 meter cable will allow you to have a touchscreen tablet like the Surface Pro or a clone of one right next to your listening chair. I found no loss in sound quality with a longer length like this.

I use the Singxer SU-1 USB Bridge, with the 5 meter USB cord from the laptop going into it. It has some serious Femto clocks that clean up the signal and it's output to the DAC is AES/EBU. If you have a DAC that is SOTA, it is probably not going to improve the sound. But with just about any other DAC, the sound improvement is due to the Femto clocks in the Singxer SU-1 providing a better job with USB input than the USB on the DAC itself. The improvement is astonishing, and it allows you to use a Computer instead of one of those units like the Aurender N100H.

Hope this helps. It must be a pain to get up to change the songs. 
viber6
2,448 posts
 
WC,
Regarding soundstage, the objective is to reproduce the soundstage as presented on the recording, whether narrow/shallow or wide/deep, according to the concepts of the musicians, the actual physical dimensions of the stage or recording studio, the processing technique of the recording engineers, etc.  As such, if an accurate amp such as Rowland 535 or 925 gives the most revealing information such as tone quality, freq extension, etc, then it also gives the most accurate spatial info presented on the recording.  It is NOT ideal to artificially boost the dimensions of the soundstage, even if you want to make the recording studio sound like a football field or ocean.  That is just plain euphonic distortion, as I experienced it during my early days of rolled off/bloated tube amps.  So if you want accurate soundstage, go for the Rowland and similar accurate amps, but yes, if you want 3D sound that wraps behind your head, look elsewhere, and go for any euphonic electronics.  So I think that the ARC Ref 6 is preferable to the Ref 10 for accuracy AND truthful soundstage, according to your descriptions.  It also has some tubelike qualities which you like, compared to some sterile SS pieces.  And if the ref 6 gets too biting only at loud levels, that tells you that you are playing that music too loud,  just as if your favorite singer sounds gorgeous LIVE at the right level, but harsh if too loud by screaming her voice and artificially amped up too much.  Don't think that because the Ref 10 is more expensive, then it must be "better", and of course don't think that a ref 11 is the holy grail.  I know you are starting to realize that more money doesn't necessarily buy more happiness in equipment. 

Also, the soundstage is properly and mostly re-created by the speaker and its interaction with the listening room. The physical design of the Neo creates that large space.  Equally important, the style of the recording as I mentioned above.  But the job of the electronics is to passively transmit the truth of what is on the recording, while being powerful enough to drive the speaker effortlessly.
grey9hound
1,112 posts
 
@Whitecamaross
This is the 6550 Winged "C" SED Tube in your Picture.
It is made by Svetlana in Russia
http://www.theaudiotubes.com/6550-winged-c-matched-quad-great-sound-quality.html .
More to discover