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,
"oh that is a great price, let me ask the wife" 
I agree with everything else you mentioned in that post, but for me, when it comes to big monetary decisions, my wife and I always decide on that together.  I guess you would label that as stupidity, but it's standard procedure at my home.
Dave
WC,
Understood  - that's a good clarification.  I can definitely understand your position there.  Sometimes there's a genuine intent to buy something, but it doesn't work out. However, when someone uses that as an excuse to bail on a purchase - especially if it was already agreed on - it is pathetic.
Dave
techno__dude
Have you heard the xs300’s vs. the amps that you mentioned? Or, are you just speculating on the build quality?
At the end of the day, at least for me, it’s how the end product performs - especially compared to other brands likes the ones you mentioned, and also compared to other models like the ones WC mentioned.

That’s why I’m here - to enjoy hearing WC’s take on this equipment via his experiences, especially the comparisons.

Why are you here?
Dave
WC,
Thanks for the audio comparison video. So happy that you are enjoying the sonics from these two awesome sounding amplifiers.
I’ve found that I’m not a fan of the Nordost sonic signature, because I don’t like a drier sound - especially in the mids and highs. Basically it seems to clamp down a bit too much in those areas, and I prefer a little more liquidity.   However,  I do realize that Nordost cabling can make things sound clearer and faster, which might be more desirable.

I seem to hear that Nordost is in the chain in the video (I have no doubt that the sound overall is much better in person), which does affect the sound from the amps. My guess is that the Xs amps are a little bit tighter sounding overall than the Dags, so the Nordost effect is more pronounced with those amps. To me, the Xs amps sound like they would probably be my choice - they sound like they do some things better - however, I would probably use different cabling - just my taste.
Excited to continue this journey with you.
Dave


rsf507,
I agree  - for me it's not as musical, but I understand that for others, musical is exactly what the Nordost does for them.  In previous listening with Nordost, the tighter sound seems to benefit and bring out drums.  Again, just me.  Back to the journey  :-)
Dave
Always fun to do an XLR comparison and would make another great video.   If you have Odin PC's and SC's in the chain, then there might be some synergy with the Odin 1 XLR.
Dave
WC,
Nice setup - for both music and home theater!   What cables do you use with your HT setup?
Dave
I guess I'm on the soul train too.   The Merrills sounded very exciting and I can see why many would prefer them.   However, as good as they were in both the lower and upper frequencies, I still feel like it's missing that something - soul I guess.   Today's Class D sounds to me a little like the way I used to use my equalizer in my teens, with a bit of the u-shape (bringing up the bass and treble).  That's part of what makes the sound very attractive for me.  On some things though, I miss that extra something - that soul.
Dave
kren0006,
True about stereotyping, and I would agree about listening to each amp and give it the chance it deserves. On the other hand, I don’t think it’s an issue to identify a trend, based upon items that have been heard. However, for items that have not been heard - it’s not fair to lump them before hearing them.
For my comment about class D, perhaps I could have framed it better, mentioning the class D I have heard recently, rather than being absolute about class D.

Dave
No matter how many comparisons are done, there will still be folks who are not satisfied. No matter how much better you try to make the testing, there will still be folks who are not satisfied.

I love the way WC is doing videos and inviting us to his journey.   No, it's not going to be everyone's way of doing things - that's the point - it's his way, and we're along for the ride.

Yes, I suppose that doing more comparisons = more videos = more views = more money.  But, it's also more time, and I'm sure WC needs to have a balance with his time as well.
Dave
techno__dude,
So, I was actually wondering if we would hear about the M3 as well and what was happening with the M3. But, we’re human, we change our mind, we make decisions daily, and sometimes they don’t go the way we thought originally. It’s not lying - it’s just part of the journey, part of the many decisions that WC has to make for himself. He needs to do what he wants to do, no what we want him to do.

Look at it this way, if WC was just in it to build up equipment and then sell it for himself or for a dealer, then why didn’t he spend the time to post/video and build up the M3? What’s so suspicious here?

The problem is that you think this thread is about you and/or the rest of us, and you feel the obligation to report any misdeeds. The truth is, this thread isn’t about you or us, it’s about WC and his journey for trying out equipment - simple as that.

True - he does not necessarily want to hold onto something long term.
True - he wants to buy equipment for the lowest possible price.
True - he probably wants to sell it for the highest possible price.
True - he is working with dealers at times to get this equipment.
True - he will probably tell us he’s going to do something and then change his mind and not do it. That’s his perogative - it’s his journey.
For those of us who are here, we understand the above truths, and we choose to be here.
Dave

WC,
I like the idea of a shootout as you mentioned, without knowing which one is which (until revealed later - maybe a separate video or later in the same video). No matter what you do, there will be folks who will find fault with the test. You won’t be able to satisfy everyone, because there are so many variables, including the room, the speakers, electronics, etc, let alone the recording device. Another variable is the device that folks use to listen to it.

I would recommend that you do the shootout and then provide your opinion on what you are hearing and the differences you are hearing. After all, that’s why we’re here - to hear your opinion and the way that you are able to articulate the sonics and the results of the combinations of equipment and cabling. That will end up being more important and what I come here for - rather than a good recording device. I have no doubt that a better recording device will be better than an iphone, but it still won’t compare to what you are able to share.

Dave
WC,
Great question.  Part of me thinks it should be stock cords for a shootout, if you don't have cords from each brand that you are comparing.  On the other hand, better power cords might allow you to better differentiate the two brands, but then it would also introduce the sonic characteristics of the cord.    Best case would be to have decent PC's that are as close to neutral as possible.

Dave
ricevs,
This thread is WC's journey - his way.  Just a suggestion - perhaps you should look to other forum threads that might better fit what you want, because this thread does not seem like a good fit for you. 

Dave
I think it would be interesting if you were to get a Soulution product to try at this point - especially since you have the Focal's.   However, I suspect the buying/selling of those products might not work out.

Dave
I understand what you’re trying to say/do, but I don’t think it’s a good analogy - sorry - but I do get the gist of it. Speculation is an absolute part of forum threads - especially when based upon logic and reasoning (which is what viber6 is going for) - and, of course, I think most folks realize that it’s just speculation and that’s why there’s so many suggestions for WC to try this and that.

The reward (at least for me) are the videos where WC shares what he is actually hearing, as well as his reviews.

Dave
On the first song, the tweeters in seemed more immediate and focused and the tweeters out more diffused. For that song, I might choose the tweeters in. For the second song, no question, tweeters out sounded so much better.
Overall, vocals like the first and third song sound better with tweeters in, and drums on the second song sound better with tweeters out.
Dave
Yes, kren, back to WC testing  :-)   Looking forward to today's video.
Dave
kren0006,
You take it as shilling - it didn't hit me that way at all.  Just voicing my opinion here as you generously have for a while now.  I'm sure WC can handle his own thread and deal with folks as needed.

For fun though, let's say it is shilling.  If so, the other side of it is to realize that any company that touts their product on this thread is taking a risk.  And, I don't mean taking a risk of getting comments from you and riaa for being a shill.  What I mean is that this is a thread where the owner of the thread is not your standard reviewer and is willing to call it as it is.  I'm betting there are manufacturers that might even be a little bit afraid of this thread and what WC might say about their products, because WC's opinion might affect their sales.  It's pretty bold for anyone to come to this thread and tout their product.  So, I say, if WC is not objecting, then let them be and let them take the risk.   If WC objects, I'm sure he'll address it either directly (PM) or on this thread.

Dave
I agree with ricevs - hoping you will review the amps before you sell them.
Dave
No Soulution?   I wonder how those amps will compare with the Pass Labs Xs300's?  Most likely less heat, but I'm curious about sonics.

Dave

WC,

On my first listen, I really liked #1 as it was playing and didn't like #2 when it first started.  However, as #2 went along, I think I might like #2 better.   I'll need to listen again and in a better environment, but that's my first pass on the video.

 

Dave

I suppose it does seem like it's getting to you WC - e.g.  one of your most recent posts, where you go off about folks not watching the video.  Wonder how that impacts any newcomers to the thread?  And for folks who prefer forums over videos - it's probably not great for them either.  Anyway, I'm glad I read your thread AND watch your videos   :-)

I do understand, it's a lot of money for that Mephisto, so it's probably a bit frustrating at the moment.
Dave
Look at you go WC!   I have to admit, I like it when you're very pissed off  :-)
Dave
I agree as well WC about the new component experience.
I also agree that the Merrill 118 + Ref6 + Alexia 2 is an example of great synergy and sounds really good.  The Merrill 118 definitely sounds different than when you first fired it up - again, a testament to a new component experience and finding the right ancillary components.   I wasn't as much of a  fan originally, but now  I do really like the sound of the 118 - thanks to your efforts for sure.
Dave
"As far as boulder, i heard that their new stuff is nothing like their new models."
???
My guess is that the Mephisto just needs to break in and will likely calm down a bit.  Just needs some time I think.
Dave
Thanks dep14!  Good suggestion, even if break in is not needed - I have it playing on my system right now.
Dave

The XD stuff inverts phase?  I haven't experienced that with my Theater 7...

 

Dave

Good find on that second song - a nice rendition of John Denver's Perhaps Love.  Sounds good!
Dave
viber6,
Or, you could say that it is one of the best examples of an overpriced product line :-)
I agree - would be interesting for WC to share the comparison of the Essence with the MBL at the store there.
Dave
ron17,
Wow - not asking for much! :-)
Actually, WC can do most of the comparisons at the store and share the video, as he did with some of the other components. It’s not the same as doing those comparisons in his room, but they would still be cool comparisons.
WC can comment, but I suspect his goal at the store was not comparisons, but to allow us to just hear some other components.
Dave
WC,
I'd be curious to know what your thoughts would be, if you ever had the chance to compare the MBL with the Essence.
Regarding my other statement, I have no idea about MBL - never heard it.  I was just letting viber6 know that he could say it a different (and possibly more proper way) - depending upon how he really feels about it.
Dave
goodsource,
I agree that it would be interesting to pair Synergistic Research cabling with the Gryphon. WC often ends up doing comparisons of equipment that I would never hear anywhere else. So, I’m sure it’s a possibility that somewhere down the road WC might try out some Synergistic Research.
Dave
WC,
I love this followup of your listening session and the pros/cons.  It not only lets us know what you are hearing, but it also lets us know the vodka vs whiskey of your listening taste.  Very helpful - thanks!
Dave

WC,

That's interesting about the room correction for the bass.  This will be fun to hear what you think and for us to see and hear your videos.  I'm thinking it should help with the blending of the bass section to the panel.

Dave

This just gets even better.   There's now a bias now towards folks who are newer or mostly post in one thread?  What does that have to do with anything?  This personal stuff just continues...
Rather than taking posts with a grain of salt, it would be cool if you could take the post for what it says. 

Dave
The folks on this thread are certainly entertaining. Instead of just discussing equipment and keeping it to that, we keep getting back on the personal side and are now laying out some conspiracy theories for who this person really is. I kind of thought our speculation should be with equipment and/or listening tastes on this thread, but I guess not. At least viber6 keeps the discussion to equipment and listening preferences - I give him credit for that.

One more thought - this is a public forum, managed by Audiogon. If viber6 is so out of control that it’s bothering the OP to no end and everyone else too (and requests to tone it down are not working), then it should be very simple to contact a moderator with Audiogon and get something done. However, if the moderator finds that viber6 is within the rules and spirit of the forum, then he should be able to continue and the negative comments should stop. At that point, just scroll and don’t respond, if it’s not to your liking, but is approved by the Audiogon folks. This would be a better method of handling things, rather than posting and making personal jabs at the guy. Last I checked, I don’t believe bullying is in the spirit of the forum either.

Dave
Interesting.  Sounds OK.  Perhaps the sound level is overdriving the microphone a bit or my headphones can't handle the bass   :-)
Dave?
I listened to a Harbeth speaker years ago - not sure what model - but I remember that having boxiness as well. 

Dave
viber6,
I appreciate your use of WC’s comments to arrive at logical conclusions. You have good intentions in your recommendations. However, just to make you aware of something that has been previously mentioned, you sometimes make statements that come across as commands.

"Move the whole speaker further away from all walls to decrease the congestion and mud. Toe in so the midpoint of the panel faces you, which will lessen some HF rolloff. "

Perhaps re-word these types of sentences so that they come across as suggestions, instead of commands. You’re smart, so I’m sure you can understand how this can appear to be commands, even though you don’t intend for them to be commands.

Dave
WC,
I’m glad that you let us hear the ML first without room correction, so that we can later compare with rc. I suspect that rc will not only help with the bass frequencies, but it will seem to help with other frequencies as well. At that point, the ML can truly be compared with the Maggies or even the Wilsons.  For me, at this point, I would prefer the Wilsons overall.


Dave
WC - looking for ward to the videos you mentioned!

kren0006 - I agree with viber6, regarding the negativity.  I hope we can keep this thread going.  Yes, when I read your post, I absolutely interpreted it to be pointed at viber6, so I don't believe viber6 was being overly sensitive.  That kind of thing just doesn't need to be said.   I also agree with speedbump6, we all have different needs and likes.

Dave
Trying to consider the questions (I definitely understand the importance of them), but I don't really know which one would have a larger fan base or garner more interest.  Regarding one being easier than the other to work with, I would think the 20.7 to be easier.   I also prefer the sound of the 20.7.
Overall though, for my interest, I would not keep either one.   I think there's many other lower price speakers for consideration.  I could be in the minority on this though.
Dave
kren0006,
"I agree with WC, and stand by my statement that the myth Viber pushes - that due to clarity it is always better to use dac direct - is wrong. No offense to Viber, he is just wrong on this point."

Actually, WC agrees with viber6 regarding clarity - it’s mentioned in his first three points, with regards to the dcs Rossini with clock plugged in to the Mephisto:

1. Obscene amount of information
2. Every nuance and detail is served on a platter
3. Awesome low-volume level listening experience

So, for WC, clarity is important, but it’s not everything. That’s why WC has points 5-8.


For viber6, clarity is everything. Points 1-3 are exactly what viber6 has spoken about previously, and that’s what makes it better for him.

It’s just two differing opinions/preferences. No right or wrong.


Dave

kren0006,
That is exactly the point. I’m paying attention, but you’re not getting it. From viber6’s point of view it is always better, and for him that is correct. He clearly states "For me..." in his post. He does also make the point that if it’s not what someone else (like WC) prefers, then a preamp will add the needed color to satisfy another person’s preferences.

Seems like you have this agenda to just make viber6 wrong for some reason??  Meanwhile, viber6 is being reasonable by qualifying things "For me..." and understanding that other folks might like other colors.
Dave
With you 100% carey1110!!
That's why I mentioned that it seemed like an agenda about viber6.

Dave
jetter,
I'd sure appreciate hearing your perspective on this, since you agree with kren0006.  To me, viber6 has been fair in showing not only his absolute preference for clarity and for his opinion that DAC direct has more clarity than a preamp, but he's also acknowledged that others who have different preferences will appreciate a preamp.
Dave