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

Showing 35 responses by sequence56

Heard the fragments twice, once on ipad and once on pc.
Both times best was #2 (Odin?), then #3 (Audiomica?), last was #1 (Dragon?)

Did not heard any of these pc's. Most close was Audioquest Hurricane, which I tried at home recently.
Whitecamaross, I have also the Monitor Audio PL 500 mk2 and I like it a lot.
Is in another league compared to the PL300 mk2, which is already a terrific speaker, I heard them side by side a few times.
No ear fatique here even after hours of listening.

Be sure to use them on spikes, included in the package and I have a stainless steel disc under the spikes, custom made, which is a big improvement over the original foots.
Or, as some say, it is even better using them with Stillpoints.

I am very interested about your findings regarding the best amps for the PL 500.

I use them with ARC Ref 5SE, which is more laidback than the Ref 6, together with Krell mono 400E, far better by the way than your 402E stereo amp.
No computer audio here, my good old Sony serves me well, but I hope to change asap with the likes of an Esoteric K1 or similar. (if there is something similar lol).











whitecamaross, thanks.

Now I like to hear the Luxman 900u preamp, although this is nearly impossible in my own setup.

Do you have any thoughts about the Mark Levinson no 52 preamp compared to ARC Ref 6 or Luxman 900u.

Keep going with your enjoyable and interesting thread!
Whitecamaross, thanks again.

It’s my understanding that Audio Research works well with a lot of other brands, as in my own setup. One of the exceptions is ARC with McIntosh, frequently mentioned so.
Indeed trying Ref 6 with GS150 on the PL500 mk2 I can imagine it will give you a whole different outcome.

D’Agostino comes also in mind. Very clean, dynamic and open sound.

I heard MC1.2 KW in an all top of the line McIntosh system with B & W 802 d3. I was not impressed to say at least, dull and boring. IMHO.

I am glad for you that it works well in your setup.



Whitecamaross!

Listening at 92 db average for hours can cause severe ear-damage and even permanent hearing impairment.

I listen normally to my PL500 II at a far more moderate level at around 55-60 db, although it is fun to crank up the volume sometimes.

At these volumes the PL 500 II comes already to life here, with the output on my Ref5SE sometimes only at the 2-3 mark, out of 104 possible.

No changes in sound when listening to high or low volumes either, except for the volume output. 

Note that a 3 db increase in volume means you are doubling the volume!

On my work I have to wear ear-protection with volumes of 80 db and up, so that is also what I am doing there.

I can't comment on the Bel Canto or the Luxman combo, did not heard either of them.

Enjoy listening, take care!




Whitecamaross,

I have already a very decent and enjoyable low end at lower volumes, so  even at moderate low levels it's really fun to experience the power and control. 
Regardless of volume, the amount of bass here is in the same proportion to the mids-heights and that's a must in my opinion.
I sadly heard too many system's which came to life only at higher volumes.

Cranking up means indeed the big slam with the PL 500 II, which is capable of 120 db. So with the volume of 100 db you are not precisely near the end of the road.

My obvious amp indeed is big and powerful, in your case at this moment the McIntosh 1.2 kw.
Interesting for me to hear these in a different setup as heard before, to make clear what they are capable of.

Did you have any experience with Gryphon. They are receiving very good reports throughout.



Whitecamaross,

Indeed the Luxman amps are receiving very good revieuws all over. What they do good they do extremely good.

I did not heard the separates 900u, but instead one of the newer big integrates, I think it was one of the 590 models.
While it was a very pleasant and smooth sound, it was somewhat too smooth for my taste. Everything was sounding smooth, even if it was not in the recording.
It was also not the last word in resolution and dynamics. 

These things came back also readily in the revieuws I read about Luxman amps, btw also in their cd-players.

I thought that the Bell Canto Black was also more dynamic in your system.

As usual system-energy is key!


My dealer and the importer of Monitor Audio here are not horrible at all in their marketing or otherwise, in fact they are very straightforward and extremely accommodating with everything. This including a fully free trial of the PL500 at my own house in my own system for two weeks, after which I bought them.

I was never offered this from a Wilson or Magico dealer for a model in which I was interested at.

A lot of shows also with the PL500 around, so nothing wrong with that.

whitecamaross,

Here Krell mono power and ARC pre are not at all bright sounding with my Monitor Audio PL500, so as said before everything is system dependent.

Nevertheless I am going to listen next weekend to the Simaudio Moon 860A power and 740P pre with the PL500’s together with a front end also from Simaudio.
That will be fun!

About the Martin Logan Neolith, I am still surprised that a lot of people liked the smaller speakers from ML, the Renaissance and/or CLX Art, far better than the Neolith!
This including some well-known audiophiles with extensive experience with these models.
I hope to hear some of the latest offerings from Martin Logan also next weekend.

Appreciate your thread. Keep going!
I heard recently Monitor Audio PL 500 with a whole set of electronics of Simaudio, pre 740P, power 860A, cd-drive 260D, Dac's neo 380 + 780 DSD Mind.

While it was a very smooth presentation without any harshness, it was lacking in almost every other aspect; resolution, dynamics, LF and HF extension, recessed mids including voices, very average IMHO.
The PL 500 can sound very clearly better than this, unless of course you like it this smoothy way.
The poweramp was for sure not the most powerful out there.

So I suppose your setup with the ARC Ref 10 will benefit with something more powerful than the 860A, lets say indeed eg. The Gryphon, D'Agostino's, maybe Constellation.

Enjoy.
Adding the Chord Blu Mk.2 upscaler to your Chord Dave will take it to a whole new level. It is not even close, you have a whole new source with the Dave/Blu Mk.2, according to several reports.

Even the Hugo2/Blu Mk.2 outperforms easily the Dave alone, according again to these reports.
Price of the Hugo2 is around 1/5 of the Dave!

To find out I am arranging now a home session with the Hugo2/Dave and the Blu Mk.2 upscaler.
Nevertheless the Lumin S1 remains a fantastic performer.

My Audio Research Ref 5SE was already very good just out of the box and improved considerable further in the first 600 hrs, breakin time according to the manual.
Even with low hours however basic characters were already shown up.



From the Chord website:

A comprehensive suite of high-performance connectivity is offered and the Blu MkII also features a USB digital input, meaning that it can also be used a standalone high-performance upsampler, for use with other digital sources.
APL DSD-SR 15K Euro
APL DSD-MR 40K Euro
APL DSD-S   9,5K Euro

cd/sacd transport DTR-MR 20K Euro
whitecamaross,

Thank you for your thoughts on the Esoteric K1. Just wanted to hear that against the Lumin and Chord Dave.
Best post of the whole thread YMMV.


Boulder first, than Gryphon, both video's. 
Gryphon is closer to Boulder in the second video.
The fluidity, dynamics, stage, more natural presentation of the Boulder are obvious.
Nonetheless Gryphon is doing also extremely well.
Well done, thanks.

Tekton Ulfberht: nice, but not at all at the same level as the Alexx. 
The Ulf sounds in comparison flat and boring.
Had higher expectations of these due to all the glowing reports.

"I think 99% of the folks here don’t care to be taking apart crossovers , wrapping heatsinks in aluminum foil or using birthday cake toppers on top of the amp to prevent vibration let alone lamp cords on boulder or cloth hangers to hang the cables from the roof so they don’t touch the floor. "

WCS, regarding myself, you are absolutely right.
I heard the Soulution 511 and was impressed. Clean, detailed, lifelike, without being clinical. 
My audio provider, whose ears I trust, preferred the Soulution 711 over the Gryphon Mephisto.
When visiting a dealer for a listening session, which I rarely do, especially these days, I want no undivided attention from the shop owner, but just want to listen to my own stuff at my own pace.
Although I never had to pay for a session, I have no problem to do so, as long as the price is reasonable.
I have the feeling, that most of the dealers here are more than willing to show you their products, because high-end is just a small market.

Most of the sessions however were a disappointment, only helpful to narrow down the choices.
The list goes on and on of products which did not meet my expectations in at least that particularly setup and room.

Best service was from the importer, which allowed me to try my Monitor Audio PL 500 speakers for free for two weeks, they brought and picked them up, without fee or necessity to buy. 
I ordered them shortly after that.
For the importer it was six times at least a two hours ride.

They should make them sounding right from day one. Four weeks is a long time, especially for the impatient audiophile.
Never heard the GT Audioworks, but all panels I heard so far had a certain thinness, which I did not like.
Owned at the time Audiostatic panels, glad I got rid of it after a year or so.

It will be fun to hear these against the big boys in jays audiolab.

Not particularly cheap, but throw Esoteric in the mix with DCS and MSB.
I have currently an Esoteric K01XD in my system and it's a wonderful machine.
Not sure about that, but it seems to me that Mike from Suncoast Audio likes this one better than the K1 that you had also before.

They no longer using the AKM dac-chips, instead a fgpa based discrete dac, so the firmware can be upgraded. 

And then there are the K1X and the separates, up from K01XD


It is better not to indicate whether dac 1 always stands for demonstration 1 and dac 2 for demonstration 2.

It is very simple. You like one better than the other and that's it.
Are we really so confused otherwise!


Kren0006,

That makes perfect sense to me also, no problem with that. 

My point is, when you count all points of the individual video's, we have a better understanding of the preferences about dac 1 and 2.
In the end you know which dac is playing and when, so you can choose accordingly what's best for you.
If nothing is known which dac is playing it is more of a blind test.







Demonstration # 2 was easily the best for me, I did not expect such differences. 
# 2 was more natural sounding and less digital than # 1

However # 1 wasn't that bad at all to begin with. 
Again demo # 2 was the best.
# 1 was a little to analytical, # 2 more natural.

I think that DCS is = # 1, MSB = # 2.

Yes, exactly, best to decide with your own ears.

No chance to compare Gryphon to Dan/ARC, so will try elsewhere.
Definitely I want to hear them also, given all the positive reports.
Thanks.



I am going to listen to Dan Progression preamp vs ARC Ref 6SE later this month, to replace my current Ref 5SE.

How about the Gryphon Essence preamp vs these two.

Thanks.


Very cool that the Arc Ref 6SE stands up to the much more expensive Soulution 725.

It would be particularly interesting to compare the Vac Signature MK IIa SE or Master preamps with ARC Ref 6SE.

I suspect even greater synergy with an all VAC amp system.

I had an Audioquest Hurricane powercord on loan and had high hopes of this PC.
However, it was a big disappointment, I didn’t liked it at all. Somehow it did not fit in my rig.
Only a week later or so I had a Crystal Cable (now Crystal Connect) Ultra Diamond powercord, also on loan. This is still one of their least expensive series.

What a difference was that. The Ultra Diamond was by far the better one, in my room, with my rig, to my ears, of course.

Openness, smooth yet very detailed, control, beautiful midrange, very flowing and the best HF I heard so far here.
Bought them instantly.

Will the Ultra Diamond beat the Audioquest Dragon?
I have no idea, never heard the Dragon.





Presentation 2 is easily the best, all 3 video's.
With #2 the music suddenly comes alive, #1 is too clinical.

However, we are not in the listening room to make a meaningful comparison.