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

My thoughts on the power cord agree with kren0006's thoughts - the stock cord should be used on the Boulders.
Here's the thing - if you are an audio manufacturer and you decide to make your power cord setup unique and not very conducent to upgrading the power cord, then you are basically telling the world that they should use the power cord that comes with the component.  And, you better make sure it's a decent enough power cord to do justice to the product you are selling. 

Can it be upgraded?  Sure, anything is possible, but it's not easy or cheap.   Again, I think that Boulder is basically saying - do not use the Dragons.  
With that in mind, I think it's totally fair to compare the Boulder with its stock power cords to anything else with upgraded power cords.
Anyway, just my opinion.
Dave
techno__dude,
I would not fault WC, kren0006, or even myself for the use of stock cords on the Boulder - it's Boulder's fault,  In fact, it seems to me it's their intention.
Dave
I've mentioned Soulution a few times in this thread.  I believe WC mentioned that he's heard it before (not in his system?), so perhaps he was not impressed enough, given the cost.
Dave

Regarding the DAC Direct vs DAC->Preamp approach - I'm thinking that the DAC Direct must incorporate some form of a preamp, in order to allow for volume changes, etc.  I'm sure it's very simplistic, which can be good, but is it really better than an outboard preamp?  

Following that logic, I guess you could also claim that an integrated is better than a preamp/amp? 

I also seem to understand, from the comments, that the "hard to listen to  and/or bright" sound of the DAC Direct equates to better clarity?

Am I understanding this point of view correctly?   Because it seems to oppose what I've experienced.

 

Dave

kren0006 mentioned on page 282 - "I can get onboard with WC conclusion that Gryphon/SR the best of the four combos." I had thought that WC liked the Boulder/SR better, but when I saw this comment from kren0006, I thought I might not have heard WC correctly on his video.

However, I do see in WC’s list that Mephisto is in only 1 out of the 10 (9 actually), while Boulder is in 4 of them. I guess we’ll see what sticks around.

Dave

grey9hound,

"Probably closer to 94db-96db. like the...4 way ......

FOCAL--GRANDE UTOPIA EM EVO

That is the new speaker he has in his room."

I believe the only issue with that is WC mentioned that the speaker is under $100k MSRP, and that Focal speaker is ~$140K.

Dave

 

 

rsf507,
Which receptacles did you have?  I actually had the opposite experience - I did not like the Furutech Rhodium outlets that I had, but I like the SR Blue.  I had the SR Red (Tesla Plex SE) before that - can be a little forward sounding - I did not like that one compared to the SR Blue. 

Dave

WC,

Just FYI....

For your Take 2 video, I think you have the second song listed as "Baby, I love your way", but it's actually "Keep on Loving You" by REO.

 

Dave

WC,
I might have missed it, but I don't see the Powercell SX listed for that video - was it not in yet when you did the video?
Dave
WC,
Great video! I like how you talk directly to the Tekton folks - you were very fair and made a lot of sense.
So, are you keeping the footers in for another 6 days on the Boulders?
Dave
WC,
I had thought it was supposed to take three weeks with the Center Stage footers, but was supposed to take less time with the Center Stage 2 footers?
I agree with moving the footers close to the existing feet - at least, something to try.  I'm sure Boulder has reasons for putting their stock footers where they are located.   Then the CMS footers will be on the frame of the stand, just like the stock footers, instead of the filter area of the stand.  I don't blame you for not wanting to wait another 3 weeks :)
In the end, you might find out that the Boulders prefer their own feet.

Dave
One other thought - since you are going with a bunch of SR stuff, you could also try the MiG SX footers.  As with a lot of Ted's demonstrations, you should be able to install and evaluate much quicker - no need to wait 3 weeks.

Dave

WC,

Just wanted to add that I appreciate your honest impressions in the videos with Mikey, and your car comparison is a great analogy.  The discussion with you and Mikey about Consulting Services will hopefully be helpful going forward.   Consulting ends up costing less overall, because the money spent on consulting is much less than the money lost on the equipment merry go round - which most of the time is inevitable without an Expert.

 

Dave

WC,
I'd also be curious where the Pass Xs300 fits in ranking order - especially with this being the "My Long List of Amplifiers and My Personal Review of Each!" thread.  Of course, I realize the Cons are probably that they take up a bunch of space and that they run hot (or at least very warm), as well as taking a good while to sound their best.  It would be interesting to have those Xs300's in place on the CMS stands and with the current cabling and see how they compare to the Boulders and the Mephisto.  I don't expect that you will be getting the Xs300's again.
If you really don't care about whether you keep the Boulders or the Mephisto, then I'd sell the Boulders.  That way, you only have to invest in one power cord, one stand, etc.  You can then spend money elsewhere.  However, as techno__dude pointed out, I'm sure you will sell the one that goes first.  Then you can try out one of other amps on your 2021 list.

Dave



True techo__dude - I forgot about that.  OK, so you save a stand and possibly footers (if you use them).

WC - that's a tough one on the power cords.   If you are buying those cords and end up not liking them, they could be tough to sell.
Dave
My guess is that Stillpoints would still require a few days to settle in, but definitely not the 2,3, or 4 weeks or more of the CMS footers.
Dave
WC,
Quick thought on the Transparent Opus - this won’t be able to be a comparison of Transparent vs Dragons vs Nordost. It will be more of just how an upgraded power cord does with the Boulder vs. the stock cord. Too bad you could not try the Opus out before you had it converted to a Boulder type of cord. That way you would know what it does vs the Dragons and/or the Nordost.

For the Momentum, perhaps just having different cabling on hand - depending upon your mood. Nordost cabling will give you one presentation, and Audioquest will give you another.

Do the Pass Labs Xs300’s give you the best of both worlds? Of course, i realize they’re a bit more of a pain with heat and with time to warmup.
Dave
techno__dude,
Mono = single or one by definition.  To me, even if they are dual mono amps, the second they are bolted together, they become a stereo amp - it's now two channels in one block.  

No worries if you see it and define it differently - don't stress about it.  I understand the gist of what you are saying - the two channels are more isolated than typical stereo amps - more like two separate amps than typical stereo amps.
Dave

robert1976,

My guess would be the Soulution+Mephisto, because prior to that post, he mentioned that he had finished with VAC setup and was now working with the Soulution/Gryphon setup.

Dave

WC,
You could also do the absolutely ridiculous and give the Emotiva XPA-DR1 monos (650W into 8ohms, 1000 into 4ohms) a try with the Wisons - can you imagine that? An under $2400 pair of monos with an over $100K speaker.
Or, maybe it’s not too ridiculous, considering that you had the lower priced Tektons with your higher priced electronics.

I think there’s a lot of Emotiva followers, so you might gain a whole crowd with that kind of video.

Anyway, just fun things to think about. Ultimately, you always bring the fun WC.
Dave
Break in is another one of those highly controversial subjects in audio.  For those who don't believe in break in, I'm jealous, because you don't have to go through the painstaking wait, the ups/downs, etc.    I will never say to those who don't believe that they are wrong, I just say they are lucky.
WC, with components that are used, my thought is that there really is not any need for a thousand hours of break in.   Just a couple of days - a week at the most.  For new components though, well, that does take a varied amount of time, depending upon the item.

If you were into this for your pleasure and not for the entertainment of this thread and/or your videos, then it wouldn't be as much of an issue.  However, if you are here for the entertainment, then you need to be able to bounce around with different component, cables, etc.  The pace needs to keep up.

The Consulting is yet another that can be impacted by this.  Some folks will disqualify your credentials with regards to speaking about the sonics of different items, if according to them you did not break it in enough.
Speaking of all of this break in - shouldn't we know about the CMS footers now?
Dave

On first pass of listening, I liked aspects of both presentations, but my initial thought was that the first presentation had a little bit extra on the top end, whereas the second presentation was more balanced and natural.  For this first pass, I would pick #2.   I will need to listen a second time on my home system later tonight.

Dave

If I had to guess on what viber6 will choose, I am guessing #1 - seems like it would fit his preferences.

Dave

Good points from everyone.  Thanks viber6 for your terrific response to my post  :-)

 

Dave

rbwnc,

These comparisons are fun - and I enjoy having fun.  I will probably never get to hear this type of comparison in person, so it's fun to at least experience it this way - even though YT doesn't at all equal the in-person listening.  Plus, WC eventually provides his take from in-room listening, which is why those videos are so popular.

 

Dave

Same thing for me Kren - first listen to Vid 2, I choose Presentation 2.

Dave

OK WC, understand what you are saying in your above rant. However, in yesterday’s post, you presented it as:

"Gryphon Mephisto versus Dan D Agostino Momentum m400s tonight at 7pm eastern time."

I think when you present it that way, it appears to be an amp comparison, rather than a presentation comparison. Perhaps some folks haven’t followed you long enough to know that you don’t always have the same cables, accessories, etc. on each side, when there’s a comparison like this.

Dave
WC,
One curious item - did you find that there were major changes from the time you installed the footers to the time you did the video? Were there changes inbetween? Or, did it just kind of seem the same, once you installed them?  Just wondering if folks who try these truly need to wait the 1-3 or 4 weeks?

Dave
kren0006,
Like I said, while I agree that WC can confirm those particulars....
I am not convinced, because he's got a different setup now from what he had back then.   I'm not sure how to slow that down any more  :-)
Dave
So, by comparison, if WC says that the XA60.8 is not as good as the Mephisto or Boulder, and if kren0006's statement is correct - that he's deducing that WC says the XA60.8 sounds as good as the Xs300, then we can say that the Xs300 is not as good as the Mephisto or Boulder. 

I think though that WC had different speakers, cabling, etc when he had the Xs300's, so that would be a tough one to confirm.

Dave
I did say that you are "deducing what WC says", not that you are saying it  - so I'm not trying to put those words into your mouth  :-)
While I agree that WC can confirm those particulars, I think it still might be difficult, given the differences in the system now vs back then.

Dave

Based upon what I'm reading about the Wadax, it seems to be a game changer, so it definitely fits WC's description.

 

Dave

Just listened to the video.  Most folks are picking #1, but I'll be different and pick #2 - that's what I preferred.
Dave

kren0006,

I agree - wondering if choices would be the same if we listen in-room vs  YT.

Dave

 

WC,

Will you be doing a video with the VAC pre and Mephisto monos?   Would love to hear that combo.

Dave

Honestly, I don’t see viber6 changing at all. I understand that viber6 has his preference and wants to help others with theirs and uses their comments and good logic to deduce what would be best for folks. Good intentions for sure.

However, I think that along with the good intentions, viber6 does not respect others. Seems like a weird combo, but that’s what I see. For example (recent examples), WC recently requested that viber6 take a conversation offline, but viber6 bucked that. kren006 mentioned that he doesn’t need any tips on his purchasing decisions, and viber6 then replied with a few suggestions for purchase, such as the M1200 and the LSA. It’s this lack of respect that leaves sour notes on his good intentions.

I hope I’m wrong and viber6 starts respecting others.

Dave

For me, I'd be happy if I had the Pass Labs 60.8 and Boulder 2110 combo.  I think I actually might prefer this synergy to other setups you've had.  Or, perhaps I'm just a Pass Labs kind of guy.

Dave
I agree kren0006 - name calling and system shaming are not good ways to handle criticism.   Yes, faxer has a right to defend his Company - after all, it's his livelihood - which is even more reason for him to avoid the negative ways of handling things.

Dave
faxer - no need to get personal (name calling, etc), unless you wish to have your posts removed by a moderator.  And, it's not helping you at all with the valid point you can make.  If anything, it's turning folks off, as can be seen here.
As I mentioned, you have a valid point to make.  WC has put up the challenge to manufacturers/dealers, and you are responding.  If WC doesn't care for what you are doing, I'm sure he will let you know.  In the meantime, you are just doing what he's agreed to have you do.
kren0006 mentions that nobody cares - but WC cares and is daring folks to step up.  You are doing that.  Perhaps a classier approach is to take the high road with folks like kren0006 or ignore their posts altogether.  If you wish to dispute what they post, there's always a nicer approach.
Dave
"...Any slight movement and the entire presentation changes. ..."
Is that desirable? I understand it is sometimes necessary.   A trade-off I am guessing.

Dave
Of course, I just realized that WC probably will not be indicating if the new speakers are less or more expensive than the previous ones, because that would narrow it down.  I think only two of the choices are less expensive - the Vivid and the Kharma.
Dave
Not sure if it's the song or what, but my first impression is that it's a step backwards.  Looking forward to the next video to hear a bit more.
Dave