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

Yes you are right very expensive to repair. Especially Mágico $$$$$. No slack with that company. 

I find it fascinating that with all of the speakers Jay has owned, the Magico S7 has the best bass he’s heard in his room. Hard to believe that a medium size speaker beats those huge Wilsons. Alon Wolf should be commended for such a wonderful design.

Jay, your system has gone to a completely different level. Before, you could always easily tell you were listening to a microphone recording of a system playing. It is sounding so good now, this is no longer clear. Two thumbs way up.

 

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@rbach - I have always found that bass response is the product of the speaker/room relationship more than the size.  In my room, I have had small standmounts produce a better, fuller bass response than larger floorstanders.  It's just the way the speaker interfaces with the room. IMO.

@charyo,

I agree with you to some extent, however we are talking about two completely different speaker designs.  The Wilson XLF @ 655lbs with (1) 15" and (1) 13" woofers and using its port to extend the bass should theoretically produce more, deeper bass than the Magico S7 @ 300lbs with (3) 10" woofers in a sealed cabinet with no help from a port and with less interaction from the room.  I have had many ported and sealed cabinet speakers.  It has been my experience that a larger ported design will produce more, deeper bass and also interact with the room more as opposed to a sealed cabinet design which I found to produce faster tighter bass and interact less with the room, but not produce more, deeper bass. 

 
Jay has reported the S7's to have the best, deepest, tightest bass he has had in his room.  That is why I said Alon Wolf should be commended for his design.

Actually, all things being equal, a sealed design will go deeper (12db vs.24 db roll-off on ported). 

In my room, no Wilson speaker went as deep as my S7 Magico.

I’ve said it before, to get most out of a ported speaker design, speaker placement is KEY. It is painful at times to find the perfect spot with ported speakers. It’s not easy get a balanced presentation where the bass doesn’t overpower the mids or highs and sometimes you gotta be willing to change your listening position if moving the speakers isn’t doing the magic.

That said, yes ported speakers hit deep DEEP, but they don’t exactly articulate bass frequencies as sealed cabinets do although I'm not saying they don't articulate bass frequencies. 

I think the bigger factor here is THE ROOM. Finding the right speaker design for your room is KEY. 

You are so right Jay finding the right speaker for YOUR ROOM is the key. I recently purchased the new pair Wilson Alexx Vs and tho my electronics are subpar for this speaker, they sound absolutely fantastic. They must of just coupled perfectly in my room. If I’m home they are playing continuously. I Love them, best speaker I’ve ever heard in my room. They just sound right. So glad you found the one for your room, isn’t it great to finally find the right one?  Good luck on you’re continuing journey it’s been enlightening and very entertaining for me. Thank you. 

The room - the most overlooked component in an audio system. One variable that is so specific to our audio adventure. 

Hope everyone has a nice holiday with some music as well.

Really enjoying the latest content Jay. I am a sealed box devotee.

Thanks for all the work and thank you for your service.

Jay,

Aside from bass, how does the S7 midrange/HF compare with your Focal?  Normally, if bass is accurate, so is the rest of the range.  

@viber6

The entire speaker is very coherent, but also more accurate.  The issue is with accuracy comes "THE TRUTH" and sometimes the truth isn't the easiest thing to accept. 

 

Folks, 

You are hearing it here first: I have just finished an interview with Greg Weaver. In case you do not know who he is, Greg has been reviewing equipment for the following publications:

  1. The Absolute Sound
  2. Soundstage
  3. Stereo Times
  4. Positive Feedback
  5. TONEAudio

During this 90 minute interview (which will be broken out in 3 parts), I had the opportunity to ask an Audio Reviewer with over 40 years of experience questions that have never been answered before by a high-profile audio reviewer, but I was fortunate enough to ask. Here are a few of the questions I asked:

  1. Why don't we ever see bad reviews published?
  2. Should print publications have dedicated YouTube channels?
  3. What does it take for a new brand to be reviewed by a magazine?
  4.  How has the landscape changed for reviewers?
  5. How long does a reviewer live with a product before it is reviewed?
  6. What is the most important component in a system?
  7. Do reviewers evaluate components with their stock powercords?
  8. Should we re-position our speakers when we change a component?
  9. Do you consider system synergy when evaluating components?
  10. How should funds be allocated in a system?

You guys DO NOT want to miss this. I promise you, there is A LOT of great information and I am the FIRST CHANNEL to interview a well-known reviewer that has been doing this longer than I have been alive. More amazing things coming your way SOON!!

 

Jay

 

I have received many messages from people wanting for me to release the video above. I have moved up the time to 11AM E.T. time today. I hope you all enjoy this Part 1 of 3. I urge  you to relax, watch it in its entirety and hear from one of the most well-known reviewers today. This is NOT the video for you to skip through to locate answers. He took the time to open up and I believe It is important that we all listen to what he has to say. Again, this is part 1 of 3 so it should be clear that he won't be answering all questions on this particular video. 

Enjoy !

Ok folks,

Let's open up a discussion here about the first video. What are your early thoughts about the points he made?

 

Thanks Jay for bringing in Greg...what a cool guy with a wealth of knowledge.  It was refreshing to hear him speak of print and written articles / reviews and how important he thinks YouTube has become to compliment the writing he does.  Funny to hear him talk about reviewers that have little to no experience giving a product their highest recommendation when they have not heard similar products in the same price range or don't have the equipment to properly evaluate the gear. Same thing you've been preaching for years.   Looking forward to part two.

Great to listen to this old school gentleman. 50 years brings with it a wealth of knowledge and wisdom. Greg Sounds like a guy who genuinely loves music and has a gift in his ability to listen and articulate what he is hearing. He has seen so much over the years the advances as well as some of the decline in audio design. Thanks to Greg for sharing and come on to talk to us. Thank you Jay for having him.  Would be nice to know his system as well. 

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Thank you everyone. More is coming and the next 2 parts will have a lot of the questions you've been waiting to get answers for. 

jays_audio_lab

 

I enjoyed Part 1 video with Greg Weaver.

 

Happy Listening!

You should ask Greg why he think CS footers are more important than speaker upgrades

He says the below in his PF review of the footers - not sure if that's what keithr meant?  Or, perhaps a different quote?

"It was as if my linestage, mono amps, and sources, even my loudspeakers, had all been replaced by components that were at least two to three times more expensive!"

Dave

Yes, and there was a huge WBF thread where I called him out on that review.

Interesting...hmmm. .. I’ll have to ask him next time I speak to him. You all know how I feel about footers...

or certain footers...

@keithr 

Do you own those footers?

Yes, I believe we all remember your thoughts on 'certain footers'.....wasn't it around that time that you were banned from WBF?  Hmmm

@keithr +1000

 

The CS footers were a hot topic, as were some of the replies that Mr. Weaver gave to anyone who he deemed to ask any question he did not like!😏

 

 

Keith, question... you had the same honor of being banned from WBF? I thought I was the only one who was deemed worthy, darn it! 😃

Jay,

I hope you do a video comparison of the S7 and Focal speakers on at least 1 song so we can judge for ourselves.  Later, your opinion will be of interest.  I realize that both speakers are heavy, so this is not easy, but just hearing your findings is only one man's opinion.  Even if someone has the money to spend, he is not going to buy just based on any opinion, but will want to hear for himself.  I don't think any dealer can do as good a job as you in presenting the two speakers playing the same music with the best electronics, hopefully the same Boulder pair for both speakers.  A dealer may have a room dedicated to the S7 and another room for the Focal, but this is a far less meaningful comparison than you can do.  Rooms change everything.  At a famous NYC dealer years ago, I heard a Maggie in a small room like a closet.  The Maggie sounded lousy, not at all like when that dealer presented a similar Maggie years before in a much larger room.  He probably thought that the other much more expensive speakers deserved his best larger room, while the cheap Maggie could snooze in the closet.  Bad, unprofessional attitude on his part.  

Thanks.

Ok folks,

I hope you all enjoyed my 3 part video with Greg Weaver. He's been an awesome person with me so far and I'm quite happy I was able to share this content with you all. 

Now, I'm working on the comparison video of Focal & Magico. 

I managed to record 40 minutes so it will be 2 videos of 20 min each. Which speaker is for which buyer? Which speaker should you buy ? I will answer this soon. Stay tuned and thanks for the support!

Another A/B video on the Magico S3, S5, S7 would be interesting.  Obviously, the S7 has the deepest and most powerful bass, but the new midrange and tweeter drivers look identical the way they are described.  The midrange/HF performance of all these models is probably comparable.  In a smaller room, the S3 might be ideal.  Even in Jay's medium sized room, for music without lots of bass, either the S3 or S5 would be good, plus the attraction of saving lots of money.

Congrats Jay!  This setup sounds really good. Hopefully, you become totally immersed in the musical experience!