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!


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Showing 50 responses by ron17

kren I think you are missing the point of system synergy. Just because Jay preferred the Ref6SE with the VAC monos doesn't mean the Ref6SE is a better preamp. Jay told me the Soulution 725 preamp is one of the best preamps he's owned. As far as Magico (the brand) goes, I believe Jay has owned at least a half a dozen Magico speakers. He did say you had to open up your pocketbook if you own the M6's but I don't believe that was the case with other Magico models. Was it Jay who never quite embraced Magico speakers or was it you?
Maybe it's time to go out and listen to Magico speakers so you can have an opinion of your own.
@zprr

Thank you for the recommendation of Elbow's 'Honey Sun'. I liked it. Reminded me of Fink. It's so nice to have good, well recorded music that is not your standard overplayed audiophile test tracks.
Like I mentioned before.  Try a Dragon PC to power the Qbase 8.  That PC is bottom heavy with wonderful mids and highs.  I believe that will give you the tone you are looking for.
@maxwave

I have a Nordost Qbase8 (distribution strip) and a Qkore6 (passive grounding unit). Used in conjunction they brought my system to a whole new level of musicality. Before I added the Qkore6, I had my Qbase8 wired to a grounding rod driven 6' deep in my yard. When I purchased the Qkore6, I eliminated the grounding rod. The difference was definitely an improvement in my system's noise floor. This is what Jay is now using for grounding and AC distribution.
  
The QRT (Qv2 and QK1) AC line harmonizers are passive plug-ins that are meant to be plugged into the Qbase8 or into an outlet on the same dedicated line your system is plugged into, to further reduce noise.  I was told by my Nordost dealer these line harmonizers are best used at a ratio of (2) Qv2's to (1) QK1. I have that ratio of line harmonizers (3) plugged into 3 unused slots of my Qbase8. Compared to the Qbase8 / Qkore6 combo the line harmonizers are subtle but noticeable. For technical info. I would contact Nordost, or a Nordost dealer..... Hope this helps.
@zprr +2

Good point zprr, completely agree.

Very exciting times in the Lab Jay. Just when I thought it couldn't get any better....it does.
@ricevs

I agree with you. My system is warm yet very detailed and all solid state. That's what I strive for. That's what I hear when I listen to music I like, in a live setting. I do respect viber's need for utmost clarity and detail....even at the cost of lacking bass and an elevated top end.
@risevs

Why in the world did you remove your last 2 posts? While viber6 may not have appreciated them, they were the most accurate description of what viber6 prefers and his persistence in conveying it to us. I didn't think they were mean spirited. I do believe they were meant to educate him rather than ridicule him. Live music has a warmth to it while being very detailed. The hyper detailed, thin on the bottom end and boosted top end sound that viber6 prefers is not the norm, it is what most audiophiles strive to avoid. Your explanation and description was spot on. Except for the flying part, I think you should re-post them.
mrdecibel and techno_dude were also very disruptive to this thread. They were asked to leave or banned from posting. Sure hope it doesn't come to that....but it does seem like nothing is getting through to viber.

Really looking forward to your impressions on the new amp.  I thought the Mephisto Solos would be your end game....evidently not.  Very impressive.

Nice interview Jay.  I loved my FPB 300...would love to see Krell competing with the top level amps again.

And this year Stereophile's speaker of the year is Magico's A5, while last year's speaker of the year was Magico's M2...starting to see a pattern here.

I agree with pokey77 and zprr....what a great interview.  Emile's first video interview and Jay snagged it.  Whoa.

I say if you buy a very difficult pair of speakers to drive, homework should be done first.  Can't blame amps for that.  I agree that speakers should be the foundation of a system, but if only a few amps are capable of driving your speakers you shouldn't start slamming amps that can't....that one's on you.

@viber6

I'm not sure I understand your question.

"Horns are over 100 dB efficient, so even a 5 watt amp will be enough.  But horns have significant colorations, so what's the point of being able to use any amp, if you find speakers that suit you better."

I was disagreeing with your previous statement.

"But take your favorite speaker, and any amp will produce decent sound from that speaker."

Recently I bought a used amp to replace my Simaudio 870a.  The amp I bought retailed for 10k more than my Sim.  I had heard and read that the brand was a good match for my speakers.  When I received it, it was damaged (cosmetic damage) but I had a week to listen to it before I returned it for a full refund.  During that week I found the sound thin, threadbare and the bass was MIA....I hated it.  It did not sound 'decent'.  Proper care should be taken when matching an amp to a speaker....not just any amp will do.

I have found room/speaker interaction to be my priority when building a good sounding system, followed by speaker/amp synergy.

Yeah, a little confused on that last video.....Which system did I prefer?  or  Which system did I prefer for the money (price performance)?

I have a feeling this new undisclosed product that has been used on the last couple of videos and that Jay is endorsing is really something special.

Jay,
I think it's a great idea to start your own forum to be able to have more control like Mike at SunCoast Audio did.  That way we won't have to continually read the unhappy posters that feel the need to complain and disrupt.

@abizzle55,

I would look for a Classe CA-5200 or 5300.  Either one of those multi channel amps would be great for your front two stereo speakers, center channel and surrounds.  Really good value, one box and they sound fantastic.  Good luck to you.

So sorry to hear about Vladimir Lamm passing.  He was a true pioneer in the field of audio.

@abizzle55,

Classe made some great multi channel amps that can be found on the used market.  I had a CA 5100 and loved it.  However I believe the (new) Delta series consists of a preamp, a stereo amp or mono amps.....no multichannel.

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.

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

Just want to take a short break to wish Jay a HAPPY BIRTHDAY today.  Getting to know Jay over the years has given me a real inside look at the hard work and dedication he spends on his / our passionate  hobby.  He works tirelessly  around the clock to keep this thread and his YouTube channel going and filled with content that no one else is doing.....not even close.  Keeping up with Jay's journey has been a breath of fresh air for so many people around the world.  It has taken our minds off of all of the problems we each face everyday, while keeping us informed  on cutting edge audio technology.  Thank you my friend.


Hope you can take it easy and enjoy your day with family and friends.

I find it odd that posters would rather complain about how an OP operates his / her thread rather than simply move on.

Haha....so with a tank you get 4 women.  viber needs an eyeglass prescription update.

"So as far as i am concerned folks, most of us have absolutely no business in this hobby due to our terrible electrical system."

I have a feeling Jay was being sarcastic due to the constant prodding by one poster about his so-called poor electrical system.

@purefacts,

You are out of line here.  I was responding to a poster regarding what was discussed in the last video with Alon Wolf.  You owe me an apology.

@rbach +1

To state that you think Magico is paying for its coverage on these web sites is also saying Jay is being paid for the video tour and interview.  I find that accusatory and rude behavior.

Just finished Part 1 of the Magico factory tour.  I was under the impression that one of the Magico managers would give the tour, not Alon....very impressive.  So interesting is his philosophy on cabinet construction, driver coupling, materials used etc....I now have a greater understanding of my Magico speakers and the thought process behind designing them.  Also very interesting is Alon's explanation of 'air' and why it's not natural in music.  My previous speakers seemed to exhibit this but not my Magicos.  Thank you Jay for this one of a kind video with one of the top designers in audio today.  Looking forward to part 2.

@viber6,

I believe I understand your desire for clarity, definition and most of all HF extension or 'air' as Alon Wolf described it.  As a violinist seated in your section of the orchestra I believe you are hearing, and are used to extreme HF sound.  Tuning your home system and preferring that boosted section of the frequency spectrum is what you feel sounds best to you.  I believe tuning one's home audio system is very personal and subjective.  I prefer a detailed, smooth tonal balance with no frequency standing out over the other.  I don't think you would be happy with my system and I know I wouldn't be happy with yours....to each his / her own.


I have used EQ for years until I got Magico speakers.  I was friends with a recording engineer who taught me his philosophy on EQ'ing.  He said use EQ sparingly only below 200hz, only attenuate and never boost.  It is my feeling anyone using EQ to boost frequencies in the midrange or treble area is compensating for poor speaker / room interaction or compensating for hearing loss due to age, ear damage or some other deficiency.


Alon said "when you hear 'air' from a loudspeaker it's either EQ'd or you're hearing mechanical noise from the tweeter.  The whole notion of 'air' is an artifact."  His example of testing would be to use Roon's EQ and find a point at around 10-12k hz or so and boost the hell out of it and see if you hear more 'air'....you should, but it's not real, it's artificial.  The better the tweeter, the less of that noise you're hearing.


I will not argue what is right or wrong as far as what is natural or prefered sound or from which row in a concert hall is best for listening or recording.  Like I said before, what makes our hobby so unique is every room, speaker, component etc...sounds different.  It is up to the listener to tune their system to what pleases them....and not what someone else says is right or more accurate.

@viber6

Alon Wolf played violin at age six, then recorder and classical guitar.  He won several scholarships to a conservatory in Israel, and, after coming to the US, continued studies at the San Francisco Conservatory of Music.  I'm guessing he has a great deal of listening experience to unamplified music from up close, and also at greater distances.  I believe his speaker designs have changed tonally from his first design to his latest M series designs.  When I first heard Magico several years ago I thought they were analytical and a touch bright.  The M series is so different sounding to me....warm, rich yet very detailed.    

As far as sitting in the front row vs the tenth row of a concert hall, I would never sit in the front row....just like I would never sit in the front row of a movie theater.  I prefer a more balanced sound where I can hear all of the instruments equally.  I can understand and appreciate you preferring the first row.  Sounds to me like the S series is voiced a little more tilted to the top end vs the M series, although I would love to hear the M6's with Jay's current setup and Transparent cables....my guess is they would sound closer to the S7's than they did when Jay had them before....only smoother and more refined.  And as far as someone else at Magico designing the S7, I would bet money that you're wrong about that.

Although an older design I would love to see Jay get a hold of a Q series Magico.

I think if Jay were to drop a pair of M6's into his current system it would be a different story.  The Stromtank, Aurender N30, MSB Select2, Boulder 3010 / 3060 and transparent cables are a big part of the overall tonal presentation.  I bet Jay would prefer the M6's over the S7's.  Over the last month, Jay has gone from Transparent SC's to Gryphon Vanta SC's, I'm guessing to tame that slight aggressive (at higher volumes) tonal balance of the S7's.  The M6's would be more refined yet very detailed due to the Boulders, Select2 and Transparent cables....just my opinion.

Charlie Haden 'Magico' released 1979. Qobuz has the hi res version.  Not sure if that was the album Alon was referring to.

Hey Jay,
Just wondering if you have any future plans to bring in some more affordable amps and preamps to see how they sound in your current system?

Well, I'd like to be the first one to congratulate Jay for 13k subscribers to his YouTube channel.  I know it's been a lot of hard work to get there.....hoping the next 13k will be a little easier.  Thanks Jay