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!


jays_audio_lab

Showing 50 responses by thezaks

WC,
When I mention a step backwards, I am comparing the 60.8s running the Alexx vs the new speaker.  What comprises the $160K in electronics that is missing?   Is it just the Boulder preamp that is missing?
Dave


WC,
Integrated shootout should be fun! While you have the 60.8s there, it would be cool to use the preamp of your integrateds to feed the 60.8s, just for comparison. That way the 60.8s get some sort of preamp, instead of just being fed from the Rossini.  You could probably also compare the preamp section of the two integrateds.
Dave
Could have also ordered the speaker he wanted, and during the 4-5 months of wait time, bring in some lesser expensive speakers and have some rounds with those.  

Or, perhaps there's something to having back to back high dollar speakers, without a bunch of between time, but we still can't really compare because the electronics have changed so much. 

Or, perhaps, he thinks it's a risk to not have a high dollar speaker for a longer period of time - possibly losing his following.  

Still, I think that having some popular less expensive speakers would have still had a nice following.  I think he could still make it different from anyone else out there (some props for you WC :-)
For myself, I enjoy whatever he does and whatever he decides after all of the suggestions, etc.  Looking forward to hearing more of the M6.
Dave
WC,Looks like you're having fun with all of the equipment.  We finally get to see how Soulution compares to some of the others.
Dave
"I don't really want to hear from the person who has not spent time with the item (and again this is no disrespect). "
Well, that might apply to most of us here.  Should we not comment then on what we hear in your videos?  Is your intention to limit our comments so that we don't make comparisons between speaker brands, based upon what we hear in your videos? 

Dave

WC - I see what you mean, when you described the system in a previous video.   It does sound really good.

 

Dave

WC,
There’s a few comments about the sound being sterile. I liked the sound - I thought it was clear, but not sterile. If anything, the first song did not impress me as much (perhaps closest to sounding somewhat blah or sterile?), but the rest of it sounded really good - seemed to get better as the video went on.
Dave

@deludedaudiophile

"Digital and vinyl versions are mastered differently. They can't be compared."

Absolutely they should be compared - at least, from the standpoint of whether one would prefer vinyl or digital (or both).  All variables are important - the differing equipment, the media, the mastering, etc.   Perhaps someone will prefer digital, because they prefer the way it's mastered, regardless of the other variables.   Another person might not be particular about the mastering, but would base their preference on how digital sounds vs analog.   Everyone's different.

Dave

Typically, I like the sound of Pass Labs electronics.  Previous XA60.8 videos with the Wilson's sounded decent to me.   However, comparing Pass Labs to Soulution on the M6, I am definitely preferring the Soulution.
Dave
faxer,
It's nice to offer your showroom, however, for me, it would not be the same as having the speakers in my own room.   Not sure how WC feels about that.
Dave
WC,
Do you still use the SR ground products and platform products, or are those completely gone now? 

Dave
kren0006,
I agree on the VAC guess - you will probably be right - again  :-)
Dave

Sounds pretty good WC.  Couple of questions:

1) what platform is it sitting on?   I'm guessing it's not nearly as good as what your monos sit on, so that will probably make a difference.

2) Does yours have the digital option (DAC) installed?  If so, will you be trying that out as well?

Thanks,

Dave

I noticed both here and on yt that for folks who are mentioning bright or lacking bass or midrange, WC is telling them to do better than listening on their phone.

I don't think WC is trying to upset folks with those comments - what that tells me is that WC is not hearing that at all "in person".   And, keep in mind, WC loves bass, so if it was lacking bass, I'm sure we would hear about it from him. 

Dave
I agree with the logic that kren0006 presented - makes sense. I think it’s important for WC to differentiate between :
a. his doing videos on equipment, including comparisons, and asking for comments and thoughts from folks who have never owned the equipment and/or never heard the equipment in person - only heard via youtube on whatever equipment they use to listen to it.
vs.
b. the point(s)he is making in this video
I agree that over-the-top bashing is wrong, but when asking for opinions based upon youtube videos, seems like it should be fair game for comments. That’s why I mentioned that it’s ultimately great to get WC’s opinion - the opinion of the person in the room with the equipment.

A quick perspective....while this is WC’s journey with the equipment - in the room, it’s also our journey with this combination of equipment via videos - it might well be the closest any of us get to that kind of experience.

Dave
WC,
Just listened to the video - sounds good!   The last song did not impress me as much though for some reason.
Dave
inna,
The R&D (that you included) is where a larger cost can be incurred.   I think you are probably grossly underestimating that.
Dave

The comments on that Borresen video were super positive, but it didn't sound that great to me.

Dave

I agree that the Kharma setup sounds better than WC's current setup with the m6.  However, like he mentioned, a bit of a difference in electronics. 

This brings back the question - which is better:

1) Less expensive electronics + more expensive speakers
2) More expensive electronics + less expensive speakers
I'm sure it depends upon the speakers and the electronics being used.  However, so far, we seem to have two cases that support #2:
a. Wilson setup > Magico setups

b. Kharma setup  > Magico setups
Either that, or folks just don't prefer the Magico overall.  We will definitely find out more, once WC brings in more expensive electronics to try with the Magicos.
Dave

WC,

Tidal vs QOBUZ - you bet, would love to see how your system can distinguish the differences.

 

Dave

Sounded like you said VAC integrated, rather than BAT integrated for that last system on your video.  Might be my poor headphones too :-)

Dave

@willgolf 

And then there's folks like me who have crazy curiosity and love and enjoy what WC is doing.  Even though I am no longer into two channel (HT only now), I'm still here.  I also like watching videos of Porsche vs Corvettes and other cars too.  I guess I'm a curious comparison type of guy.

Dave

WC,
You just can't win - there's always some who are not satisfied.  If you play the same songs, then some folks want new ones, and vise-versa.  If you play with expensive components, you have folks complaining that you aren't playing with lower priced components, and then when you actually do that (like now), then you get folks who complain that you are not using expensive components.  Not enough break in for some folks, however, if you don't get new stuff to play with, then you get complaints then too.

Can't folks just enjoy your journey without complaining?
:-)
Dave
inna,
This was an opportunity to either recognize what was pointed out to you regarding your previous posts or to go the other direction and double-down.  In this case, I think you triple-downed.   Your post might eventually be reported and removed, but for now, it serves as confirmation of your tone and behavior.
Dave
I’d actually be curious to see what WC thinks about that :
- does he perceive that the M6 has twice the resolution?
- does he think that you can’t tell much with the Wilson?
- does he think the Wilson is consistently confused?
- does he think the Wilson is not for critical listing (listening) and maybe for a fun party?

Dave
That explains why I perceived bass issues when I was listening to the video and thought it might be my headphones.  Instead, it was just loose bass.

Dave

That's a good guess kren0006.  I doubt WC would be getting something like CH Precision (10 Series) - maybe the 1.1 series.  Anyway, WC tends to go back to certain brands, so I think the odds are in your favor.

 

Dave

WC,
You mentioned "We clearly hear differently. ", which I don't understand.  I had identified bass issues, and you mentioned that the bass is loose with the 160m.   Seems to me that is more along the same lines.
Dave
I feel the Pass pulls me in more - love the decays, and there's a quiet between notes that creates a little more drama and interest.  The Gryphon does sound really good though. 
Dave
Sounds good WC!   Will be interesting to see how the X600.8's compare -will the Pandora be used with them as well?
Dave
I know a lot of folks are liking the Essence Monos + Pandora, and there is a lot to like for me as well.  At times though it's maybe a tad too forward and maybe a little - well I don't want to say bright - anyway, it will be interesting to compare to the Pass Labs.
Dave
Speaking of that - I prefer the Pass Labs presentation in the comparison videos.  The top end with the Essence is just a bit too much.  The presence is nice at times, but the Pass Labs has the quiet, seemingly longer decays, more dramatic in those ways.  I suspect the Pass Labs can be listened to for longer periods and perhaps turned up a bit more. 

Dave
Completely agree with everything in your post kren0006. For all we know, he could have better hearing than any of us.

I think some folks like more forward and brighter to some degree, as seen in the current shootout - some are liking the more forward presentation of the Essence. viber6 takes that to an even higher degree, which as kren0006 mentions, puts his view as less prevailing. While I understand viber6’s logic, and I can see how that would appeal for him, it’s not for most folks. That again though is an assumption. I think WC asked viber6 to share videos of his system, so that we can hear what he prefers and see what we think; however, I do not think he has done that yet.


Dave
One thing to continue to keep in perspective - what sounds best to viber6 might not be best to other folks.  The same for me - what I think is best would not be best to some other folks.  I would not be surprised if viber6 ended up liking the PS Audio amps better than many of the amps that WC has had in house, especially if they're not euphonic sounding.   It would definitely be interesting though to hear the amp(s) that viber6 is talking about and see how well they do.  I'm sure they're good sounding amps, and they might show how much value they bring.  I like the open mind WC.

Dave
I think kren0006 might be right - he mentioned the Sonus Faber, and I had forgotten about the timeframe to get them.  

Dave
Go Suns!   Love the purple and orange color combination now in your room!   Much better than purple and yellow!!
Looking forward to the videos to come with this speaker.

Dave
Looking forward to your review of the fuses.  I have one of the blue fuses on my home theater processor, and I was thinking about orange - though I'm not sure how much of an improvement it would provide.
Dave
I really enjoyed #1 and thought it sounded really great - nothing to fault when listening on its own.  Then I listened to #2 and enjoyed the decay and the overall sense of liveliness, perhaps even a greater sense of slam.   My preference would be #2 at this point. 

Dave
"159 voted so far and 69% are leaning towards demonstration 2. Is the entire world correct for choosing #1 or is the minority of 31% correct?"
WC, did you mean to say "...for choosing #2..."? I think there will not be any "correct" at the end of the day, because "correct" for each person is based upon their preferences.  I think that, if anything, it shows which presentation the majority of the folks lean towards, and which presentation is in the minority.
Dave