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!


whitecamaross

Showing 38 responses by thezaks

@sqitis
I no longer have a dedicated preamp.  I'm back to just a home theater processor - currently, the Theta Casablanca IV with Xtreme 3 DACs.   Come back here and let us know if you do the upgrade for the SLP-05.
Dave

I agree with the previously mentioned brilliance vs brightness.  I definitely like hearing a natural brilliance, rather than artificial or overly done brilliance, which comes across as bright to me. 

Also, the Gen 3 of Emotiva is a different amp than the Gen 2's - I'm not sure it would be fair to eliminate the Gen 3 as an option, based upon one's experience with a Gen 2.  Plus, they offer a 30 day eval, so experience can be easily obtained.  I had a 7 channel Gen 3 for the 30 days, and even though I ended up returning it, I was mightily impressed with it.   In the end, it was a little bit thin (not bright) for me - I wanted a little more weight in the presentation.  However, for someone who has a limited budget, I think the Emotiva is a terrific value.   That previously mentioned Mytek Brooklyn would also be interesting to check out as well - again, for a limited budget.  If I was budget limited, I would get the Gen 3 Emotiva again and pair it with a power cord that adds a little weight to the presentation.

WC - I hope you can get the 200.5's again - I'm sure they'll come up on Audiogon.
Dave
Some joking to start is becoming more personal.   Just my thought on this. 

Dave
@viber6
I mentioned a power cord to help with the weight of the Emotiva’s presentation, since I’m coming from a 7.1 home theater perspective. I agree with you for 2 channel setups - it would be easy enough (and cheap enough and simple enough) to check out the EQ. For 7 channels, however, It’s much easier and cleaner (in my mind) to do one power cord for a 7 channel amp than it is to have four eq’s, + four more power cords, etc. You might think differently, and that’s OK.

@mrdecibel
You told someone to not bring in fuse suggestions and to let WC complete his amp journey. The only problem is that the journey has already been at least 2+ years (that we know about) and may well continue for a good long time. Fuses are cheap/easy enough to try. I honestly think it should be WC’s decision.

Dave
@viber6
Yes, I did try the Emotiva in two channel, as I do all of my amps. I also noted the little bit of thinning in 2 channel, but I was also amazed at how good it sounded. Good to know that the Reference might be fuller sounding.

I also agree with the logic of having a 2 or 3 channel amp for the L/R and maybe center channel, and then another amp for the surrounds and maybe center channel. I’ve had that in the past with Cary and Pass Lab products. I’ve also had Cary and Pass Labs preamps for two channel and utilized the unity gain for HT. It’s probably the best way to go for sure.

Once kids came along, I realized I don’t have time for 2 channel, so HT became the priority. If I play music, I play it 7.1. So, I wanted a really decent 7.1 system. The Theta Casablanca IV with Xtreme 3 DACs works very well for this scenario, after having gone through 5-10 processors. And, I’ve been going through 7 channel amps as well. I now have one that is making me happy and is allowing me to move on to cables, now that I have some good components.

I actually agree with mrdecibel - I would not want to try a fuse upgrade until I found the amp that I liked. However, others might choose to do differently.

Dave
@bigddesign3
You could try the Cerious Technologies Graphene Extreme speaker cables at $649 for an 8’ pair. Bob is the owner and lives here in Phoenix. Terrific guy!

Right now, he has a Black Friday special still going on A’gon here - the 8’ pair for $399 with a 30 day money back guarantee I believe. Worth checking out!

Dave
For myself, I don't like Rhodium, even though I know it's the rage.  I've tried several PC's with Rhodium, and I find (in my system) that it goes away from being linear across the frequencies.  Some frequencies are more enhanced, and for others, there is a slight dulling to the sound. 

Dave
+1 on the Audioquest Hurricanes.  I had a previous (previous to the Storm series) gen of power cord (NRG1000) from Audioquest and was not impressed.   There's definitely something different in this series of cords, so I for one would not make a general statement on AQ power cords, based upon the cords previous to the Storm series.
I'm also trying out the Cerious Technologies Graphene Matrix power cords right now (breaking them in), so I will eventually make the comparison between those and the Hurricanes.

Dave


@whitecamaross

In reading your posts, I’m not totally clear - are you comparing the sigma NR’s to the stock cables or to the WW cables?

I agree about wishing that cable manufacturers would do break in on the cables, so that a few day’s in one’s home is all that is needed to check it out. If it truly takes 1000 hours for some cables, then the 30 day eval doesn’t quite get you there, even if you run them 24X30. I guess that’s one reason why I buy used cables whenever I can vs. new cables.

Dave
Were the Pass XS150 amps hot during idle or under load? If under load, I’m wondering if the XS300 would not get as hot, since they would not get pushed as hard?

Dave

p.s. did I make page 100?
Yikes - that hot at idle for the xs150s?   You almost need a separate environmentally controlled room for those puppies. 

Dave
@mrdecibel - you welcome the guy back, and then you tell him ’Do not..." and "you need to..." - conveying to him what he should and should not do. You also mentioned "We are not here for you." Yet, you are the one laying ground rules for this guy.

When WC voices that he prefers things a certain way and wants to lay down some ground rules, then I will certainly respect that and help to support it.

I like posts like riaa’s most recent post, where comments are made on the equipment being discussed, not on the person.

Dave
What I find interesting is that grey9hound does not seem to recognize that his comments were negative. Perhaps he genuinely did not intend for them to be negative, but they are negative. I’ve seen some folks in the past that have made negative comments, and when they re-read what they wrote and recognized what folks were talking about, they apologized for it. I don’t see that happening here with grey9hound, so it’s best to move on - the logic pointed out to grey9hound is just not coming across...

Dave
I would agree that what you pointed out is definitely coming across.   The reverse is another story.

Dave
Great post WC - I completely agree!
I'm excited that you now have the 3D wraparound sound, and you are now choosing components that will keep you in that arena.  Again, these are your choices, and I'm happy to come to your party and share in your findings.
Dave
Thanks for sharing that grey9hound.  I agree with viber6 that I don't want an overly cavernous soundstage that is not real.  And, I agree that tubes aren't necessarily rolled off - depending upon how something is designed of course.  The most real system I ever heard was tubes.  It was really 3D and did not sound rolled off at all.   Even knowing that though, I don't want to mess with tubes (I've had them - a Cary SLP05 preamp), especially since I no longer do 2 channel, so I find myself gravitating to solid state amps (along with my Theta CBIV) and cabling that takes me towards that sound, along with dynamics to handle the home theater.
Dave
@viber6
So, going with the items you've mentioned about different violins and rosin on the bow, then, in order to determine accuracy of a violin recording on a sound system, one would almost need to know these factors about the violin/rosin, etc used in the recording.  Also needed would be whether or not the engineer eq'd anything to compensate for harshness or softness or sweetness, etc.  It would seem that determining accuracy in a sound system might be very difficult, based upon these parameters.
This makes objective a bit more difficult.  Perhaps subjective then takes over, and for some, it's their subjectivity that factors into attempting to reach a certain objectivity.
Dave
@tjassoc

You bet - lots of folks will feel the way you do. Your subjective preferences for the type of sound you like become the objective sound you want to get out of your system.

I can see both sides. My dealer years ago had YBA CD players, as well as Cary, Oracle, and others. Some of those players were more neutral and transparent. The YBA CD1 dual chassis had the emotional connection for me and was the one I ended up with. I had that player for years. Now that I am away from 2 channel, I strive for a sound that gives me both sides of the equation. If I have to lean to one side just slightly, it will be the emotional side. That’s my preference, and I know many would prefer otherwise.

Dave
@viber6
It depends upon a person's perspective and preferences.   The pluses/minuses might be tolerable and not "horrible" to some folks, and thus appreciated.  For others, it might be "horrible" or at least - not liked as much, and a little sweetness to make it overall pleasing might be their preference. 

I agree with WC - I want songs from my earlier years to sound good overall, which for me, might mean a tad of sweetness.

Dave
Honestly, I'm excited, and it's not even a component (DAC) that I'm interested in for my system.    Looking forward to WC's thoughts.

Dave
@ricred1
You used the word "everyone", and I would disagree with that.  Especially since I also agree that it has to do with how the components compare in the system/room as a whole.  It's not an absolute - just because it's better in one system/room, might not mean it will be better in another system/room.  However, I think WC has done a great job identifying how components work better with certain systems and preferences, based upon the sonic attributes. 

It's your choice to stay or leave. 


Dave
Does the lampizator pacific need to break in, or is it a used item that already has many hours on it?  Even if used, it may need a few days up to a week to settle in.  Anyway, just curious.

Dave
@viber6
I believe that WC had the XS150 for a while, so he probably does have an idea of what to expect with the XS300.  I think though that I remember him mentioning that the XS150 was super hot, even at idle.  I would think that would steer him away from the XS300, but perhaps winter weather helps to forget those things temporarily  :-)
Dave
Something for WC to try, if he has not already...

I’m guessing that when the Ref10 is in the chain, balanced cables are used to connect to the amps - is that true?


If so, then I’m also guessing that single-ended cables are used from Lampi to amps, when the Ref10 is not in the chain - is that true as well?

If both are true, then it would be interesting to compare SE cables from Ref10 to amps vs. the same SE cables from Lampi to amps. Some folks are saying that balanced is no better than SE. Would the performance be closer than that of Balanced cables from Ref10 to amps vs SE cables from Lampi to amps?

That’s the SE vs balanced experiment. Overall, I think it might be tough to beat an outstanding preamp, even when going more oranges to oranges (single-ended to amps for both scenarios). I remember when WC first got the Ref10 into his system - he was so impressed, I believe he named it the most impressive component he’d had in his system to that point. That’s saying a lot, considering how much equipment he’s had.


Dave
I think I saw on the MF website that only fifty of those Titans would ever be made.   Congrats on having one of the fifty WC!
Dave
I might have missed it WC, but what power cord do you have on the ref10?  If it's not a platinum 7 or 8, then that might be something to try as well.
Dave
I agree too.  You will need the ref10, if continuing to try amps.  Plus, trying out a platinum PC on the ref10 might turn things back to the ref10.
Dave
@WC
Back to the MX160.  Yes, it has RoomPerfect, but not a great preamp section, when compared to something like a ref10.  Too bad you can't get a McIntosh MEN220 to insert between your ref10 and the amps (or between the Lampizator and the amps).  That way, you continue with great preamp/amp combos and add just the RoomPerfect.  I think that would give RoomPerfect the best opportunity to shine in your setup and to fairly evaluate it as a possible upgrade to a very high end setup.

Dave
@WC
I've been getting the same feeling about Krell.  I have the Theater 7, and it's an excellent amp - supposed to be much better sounding than the Chorus amps, even though it's not as much power.  However, it is supposed to have just as much current as the Chorus amps.   I've been trying 7 channel amps for years, and I'm finally satisfied with this one.   No more looking for amps - worst case, I'll do the XD upgrade.  I'm playing with cables, as are you, so I'm enjoying the ongoing journey.
Dave
I agree with you WC - you can't try everything, especially mega buck stuff.  I like your offer to pay shipping both ways.  That way, if someone really wants you to try something they can share the wealth and purchase the cable and send it to you.  I have a 15 amp 2 meter Audioquest Hurricane that I might send to you.  I'll need another few weeks to evaluate it.
Dave
@thejeenyus54

I had a Pass Labs X350 and an X5 for home theater at my previous house, and it was absolutely fantastic. When we moved to our new house and started having kids, I downsized and thought I would try to find a 7 channel amp that would work well. 10 years later and many many 7 channel amps later - the goal has always been to get back to that sound I had with the two Pass Lab amps running my home theater. I had the Odeon last year - an experience I do not wish to repeat. However, that was my experience.
Dave
@ron17
I was very excited to try the Odeon and had one for ~7 months.  I must have had a bad apple, since apparently most folks like it.  Plus, I had the super duper upgrade done to it, and had problems with it.  I was told that RF in my house was the problem, however, I've never had a problem with any other amp or component.  Again, my situation was probably unique. 

I would guess that WC would agree with that, especially when I mention that my next amp was the McIntosh MC8207, and that amp was so much better.   I am now happy with the Krell Theater 7 and no longer looking for 7 channel amps. 

Dave
@ron17
Thanks Ron17 for your email (and post)! Good to know about your amp and the RF issue. The Odeon is the only amp I’ve ever had a problem with. There is a ground lift switch on the back, and in one position it was fine and just warm to the touch during operation - no problems at all. However, in the other position, then the amp instantly started burning up - you could smell the electronics burning. It was so bad, it scared my wife and kids. While I understand what you are saying with what happened to your amp, I’m not sure that this was RF. I think that they messed up this amp when they did the super duper upgrade. The sonics were essentially the worst of any 7 channel amp I’ve had in my house (with the ground lift switch in either position). That doesn’t seem to jive with the praise that this amp has received. Plus, the person who worked with me on this (nice guy, by the way) had me buy some testing equipment, and the test equipment did not conclusively show RF to be an issue in my home, yet he continued to think it had to be RF. I guess it never occurred to him that it could actually be something gone wrong with the upgrade. He eventually bought back the amp from me - he did make a profit on it. I didn’t care at that point - I just wanted to move on to something else.

Dave


Agreed on the separate discussion jetter. Very nice of viber6 to share his knowledge.  Plus, I’m done with testing for RF - I’m into trying out cables now and enjoying my system - AND, of course, enjoying WC’s journey :-)

Dave
I definitely agree that what we know now is possibly different than what we knew in the past, most likely due to learning and experiences.  I think WC has done a great job of putting things into context and perspective, based upon previous point-in-time observations and current knowledge. 

Dave