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 grey9hound

Viber6
You are blowing hot air now .
Better specs does not always mean more accurate or better sound .
Stop while you are ahead .The hole is getting deeper.
A tube with better specs does not mean that it is a more accurate sound either.There are way too many other variables ...circuit design.etc
Viber6
You just don’t get it .
I have tubes from Vintage Tube services.....just as good or better than Modjeski’s
Enough of your ramblings. please stop.
Viber6
Just for the Record "Laid back sound" is not less detailed .It is less Forward or less "In Your Face" It is less "shouting at you".The detail is still all there , just not in your face or "forward ". A laid back sounding system can be turned up loud and sound like LIVE music without Ear Fatigue.
Please stop the ramblings. You are ruining the thread ....for sure.
Well thats good news then.
Personally, I would still not want to be caught with cables and take a hard hit if they never reopen. But thats just me.



If the cables in question are actually highly regarded and or sought after, and the company goes out of business, they might actually go up in value.
@viber6
I get the impression that if you do not hear ear piercing shrill highs, then you consider the system to be lacking in some way ?
I disagree, as i believe most others here do .
Regarding your long winded posts about objective/subjective and the Merrill ., I don’t think you should be upset because the majority here think that it is wrong to do in this thread.,..then you spout of as if you and Guido have the right to have a "sophisticated " discussion on WCs amp thread.
It might be a little different and overlooked if you didn’t write a Chapter every time you post . Just my opinion, of course.
@viber6
I understand where you are coming from. I have a felling that our musical tastes are probably quite different. I like a lot of Contemporary Blues Artist .. like Keb Mo, Buddy Guy, Derek Trucks, Tab Benoit, Robert Cray, Robben Ford...etc
But, I also like Some Funk .. .like the Brand New Heavies,The New Mastersounds , Nightmares on Wax,Soopasoul, Galactic, Quantic,Soulive, Cookin On 3 Burners
And some techno ,electronica stuff..like the Mushroom Jazz albums(dj Mark Farina) Kruder &Dorfmeister, Verve Remixes
But I also like stuff like Bela Fleck, Johnny A, Larry Carlton , Boz Scaggs..etc Acoustic Alchemy ,Van Morrison
But i really am not one to listen to any classical or pure singing kind of music.I guess I have always preferred electrified music.

@techno_dude
Have you heard them ?
Purist Audio Design cables are also Very Expensive. I have owned many.
They are outstanding !!
Are they worth the price ? Only after hearing them can you decide that.
If you do not believe in cables, you owe it to yourself to try B4 you criticize. You will hear a difference. If you don’t your system is most likely lacking.
That is one thing that the Tekton Double Impact speakers with Purist Audio cables does very well . I can hear a difference when i change just the rectifier tube in the MC30s. or power tubes and even the pre-amp tubes.
Don’t bad mouth something until you have heard it !!
If your system is up to it , You will hear a difference in cables. The Biggest problem is that a lot of people do not have a system capable of hearing these differences, so when they try the cables , they cry foul , snake oil .. etc.
This is exactly why many do Not believe.
LOL?!!
@techno_dude 
Cables in order of which has more effect on a rig:
1_ Power cables.
 2_ Interconnects.
3_ Speaker cables

. That is not always true. I hate to say this ,BUT
 That is very subjective.
I don’t think that having a patent on something makes it sound better. So many people get hung up on measurements.The smart people let their ears decide ...not measurements. So much in Audio can be heard but not measured..Most people do not buy based on measurements. They buy because of what they hear.That is my point. Can you measure what cryoing does . I seriously doubt it. 

@axememan
I think most all of the older Keb Mo is much better
Like:
June 7, 1994 Keb' Mo'Debut album as "Keb' Mo'"

Won W.C. Handy Award for Best Country/Acoustic Blues Album of the Year, 1995

June 18, 1996Just Like YouWon Grammy Award for Best Contemporary Blues Album,
 1997August 25, 1998Slow DownWon Grammy Award for Best Contemporary Blues Album,
 1999October 10, 2000The DoorNominated Grammy Award for Best Contemporary Blues Album
September 19, 2003Martin Scorsese Presents the Blues: Keb' Mo'Part of the series, The Blues
February 10, 2004Keep It SimpleWon Grammy Award for Best Contemporary Blues Album, 2005
oops
Fixed Typo and spacing
I think most all of the older Keb Mo is much better
Like:
June 7, 1994  Keb’ Mo’Debut album as "Keb’ Mo’"

Won W.C. Handy Award for Best Country/Acoustic Blues Album of the Year, 1995

June 18, 1996  Just Like You Won Grammy Award for Best Contemporary Blues Album,1997
August 25, 1998  Slow Down Won Grammy Award for Best Contemporary Blues Album,1999
October 10, 2000  The Door Nominated Grammy Award for Best Contemporary Blues Album
September 19, 2003  Martin Scorsese Presents the Blues: Keb’ Mo’Part of the series, The Blues
February 10, 2004  Keep It Simple Won Grammy Award for Best Contemporary Blues Album, 2005
@bill_k
Come on man. Are you kidding ?
This is WC ’s thread ???
DUH ! I had no idea !
Is it inappropriate to suggest trying something different in his thread ?
Viber6 and others have went off on wild tangents and you respond to me ???
Your response is completely silly . Many others have suggested many lower cost amps and speakers . Do you jump on them and suggest they get their own thread ?
I do not feel that WC is offended by me asking ? Do you ?

@whitecamaross
I feel that it is time to change speakers to the something like the ones I recommended....Tekton Encore.....Something the average person can afford
Then you can try some amps that the regular guy can afford. Those are very efficient and you could try a lot of different affordable TUBE amps.
Personally I see no benefit for 90% of us who can’t and never will afford 60K amps . What is the point ?
I guess i am just asking , in what direction do you go after 60k amps ?
My suggestion was a direction to go. The Magico are what like 87db efficient ?
I know that WC liked the sound of the tubes, but with those speakers , you are not going to find too many tube amps that will work well with that or at the SPL that WC likes
So yes bill_k , i was suggesting a different direction .
BUT it was just a suggestion, That’s all .
Besides ,There hasn't been much amp review action, so I was thinking WC is running out of amps to try.
@viber6
Lyngdorf room correction fixes room problems like you described.
You can put large speakers in smaller rooms ... no problem.
@viber6
Please don’t assume that Lyngdorf can’t do it , until you hear it in action .
@viber6
I have Lyngdorf and Large  speakers .
Have you heard Lyngdorf  ?
Don’t say that Lyngdorf room correction yields less benefit with large arrays unless you have heard it. That is a silly statement when you have Zero evidence of it .  Lyngdorf can and will correct these problems . Please do not assume something until you have heard it and know for sure.
If you have ever heard Lyngdorf , you would not say this !
I have huge speakers in a 10x11.5 room that is open n one side. And i have Lyngdorf . What makes you so sure that the large panels won’t work right with Lyngdorf , when you have never used it or heard it ?

@minorl 
I would go with the Martin Logan if you want real bass.
I have never heard either,though . 
It looks like they can do real bass as compared to the M3
It looks like F3 on the Neolith is about 23HZ
The Magico M3 really doesn't say ,except that the freq response is 24HZ to 50KHZ.
That tells me that at 24HZ , they are most likely  6DB down.
I have not heard either , but it is hard to get a lot of Bass out of 7inch woofers compared to a 15 and  a 12
Emotiva XPA-1 Gen 1 & Gen2 Amps are harsh when driven hard. I have owned Gen1 and Gen 2 both.
If you drive them very hard at all they become Harsh.
Viber6, I am beginning to think that you believe a harsh sound is normal.
The Emotiva XPA- is also Bass heavy. It is a Great bass amp.
I agree that they are great for the money , BUT if driven very hard , they can be harsh
Well Viber6, you have me wrong . .I’ll just leave it at that. A laid back sound also allows you to play louder without being harsh , or ripping your ears off. I too listen mostly at 90-95 db peaks.
Viber6, I agree .UNAMPLIFIED live music is not Harsh. I concur that live unamplified music can be loud enough to be annoying, but is not harsh . My point is that when  amplified is when it sometimes can be  harsh,
My music is amplified . So what is your point again. 
My point is that if I turn mine up a bit (since it is somewhat laid back ) i have more head room before it becomes harsh , distorted or clipped by the amp. It sounds LIVE when turned up , but also gives me nothing harsh.
The point that i am making is that most highly resolving , up front systems that put you in the first or second row can play ok at moderate levels , but because they are perfect sounding this way, they tend to get bright or harsh when turned up to higher concert or Live party  type of levels.
@whitecamaross 
I think in  your room you would need Lyngdorf with something like the Neoliths ,  I think that  they would be boomy otherwise . My Tekton DIs are boomy in my room without Lyngdorf .
You have been talking about trying it . That would be the right time ... with the Neoliths
@spinnaker01
No you don’t "Got it already" and neither does WCSS or technodude. ... not until you hear it
@Viber6
Please stop assuming you know what Lyngdorf will do or not do with Neoliths or panels . You do not know. . Besides that ,Lyngdorf corrects the Room , not the speakers.
You do NOT need subs with the Tekton Encore. Cheaper than all of the above mentioned.....and probably better too !
@whitecamaross
I would not be sure that the Tekton Encore is a step backwards . You are already determining what you think of them before you try them !!!... and comparing them to Hyundai. Come on Man... REALLY ? Read the reviews .... they are not Hyundai.
You would be shocked by them IMO.
I can’t believe that you really have those preconceived notions.
Well WC , what do you expect? You have already decide because of their price that they are Hyundai. Big Mistake! Obviously you do not know enough about them . So all of those reviewers at Stereotimes bought Hyundais !
Here is from Stereo Times.
C’mon man !
Just because they aren’t 30k doesn’t mean you should assume that they are Hyundai !
At least hear them before you decide how good or bad they are.
If you get them, be prepared as you can hear every cable change , tube change , preamp, or amp change ...very easily . They are very transparent and 3D 


Tekton Design’s wunderkind, Eric Alexander, has created a lot of buzz over the past five years with a series of most exceptional yet affordable loudspeakers. My first audition was less than a year ago when I reviewed the Double Impact speaker (reviewed here). With its $3,000 asking price, it catapulted Alexander into iconic status. Not since Albert Von Schweikert introduced his VR-4 in 1993 has a loudspeaker been so well received by so many music lovers with so little monetary outlay. As of this review, Stereo Times writers Dave Abramson, Frank Alles, Mike Wright, Mike Girardi, Ron Cook, Greg Voth, Ed Van Winkle, Moreno Mitchell, as well as myself, use Tekton loudspeakers in their reference system.

This situation, dear reader, is unprecedented in our magazine’s 20 year history! I have never heard the systems of Dave Abramson, Frank Alles, Mike Girardi, Mike Wright, Ron Cook or Moreno Mitchell, yet these writers have all come to the same conclusion as myself: Tekton loudspeakers are very, very special.

Above are the first 2 paragraphs of the Tekton Encore review..

http://v2.stereotimes.com/post/tekton-design-encore-loudspeaker/





Alexia 2 is my guess .
Which most of us cannot afford . If most of us cannot afford it ,why would we be interested ?

@whitecamaross
Please do not take anything that I say personal.
I am just stating my opinion ,and am not trying to make you mad in any way.
I hope these new speakers will be able to do BASS well.
If so ,then the music that i sent you will sound much better as most of it has good bass.
I guess for me to say that i am not interested if you buy some 50 k ish speakers is somewhat wrong. I am still interested in your reviews and finding , just like everyone else. I should correctly say that I will be disappointed since I cannot afford them, rather than uninterested
I still am not forgiving you for referring to Tekton as Hyundai , though :)

Actually the more I think about it , Tekton is more like Chevrolet and the Double Impacts are like a Camaro SS. The Encores , and Ulfberht like a Corvette. They all give you a Hell of a lot of performance for the money.
Viber, I tried to listen to that but , I fell asleep at about 2 minutes in .
I am just kidding. It was actually at 1:42 in.
@bigddesign3
I agree 100% that Sabre ESS DACs are bright, for sure !
I have never found a Sabre Dac implementation that was good.
Cables can make a difference too for more 3D sound.
Some are better at it than others 
@Viber6
Warmth is in the upper bass region from 150hz to around 250hz .Mudiness is a little farther up the freq chart IMO
http://www.sineworld.com/html/basic_knowledge/freqchart.html


@Viber6
That is your opinion, which , of course is wrong . I am not missing HF info. It is all there .
@viber6
Tubes are real sounding, not rolled off. Different tubes and Tube Amps have different sound , just like any ss amps and their components and design have different sounds.
It is true that it would be difficult to find the right tube amps to work on the Neoliths. Here is some mono tube amps that should do it well.
https://www.usatubeaudio.com/product/amplification/atma-sphere-ma-3-mk-3-3/.
These are much less than the amps he is wanting ,and well worth a try IMO.
I keep getting the feeling that if the treble doesn’t pierce your ears or rip your head off, you think that it is lacking. I and, many others here will disagree.



I am curious as to what songs or Artists have you played on the Neoliths .
Have you tried all kinds of music ?
Anything that stands out ?
Surely you have played much more than just Dire Straits?
Do they sound good with all kinds of music or are they suited to certain types ?
@whitecamaross you are obviously hung up on how much something costs.
Lots of amplification does not have to mean expensive.
Why are you so hung up on cost.you always state that upfront.as if it means everything...it doesn’t. Many here have tried to express that to you..but you don’t get it.
The Tekton speakers from 3k to 12k will come much closer ,if not surpass what you have tried at much less cost.
Read the reviews. At least 7 or 8 reviewers at
Stereotimes own the Tekton encores or ulfberhts as their reference speakers.
Lots of other speakers and amps out there that perform as well or better than what you have or have tried for much less!
Cost does not = performance!
Maybe someday when you are more experienced you will understand it.
Maybe ..???
I agree that it would probably help (Rane) but i use the EQ in JRiver Media Center which works very well. I mostly leave it flat, but when needed i can adjust
Try some Bela Fleck, Keb Mo’, Jing Chi, Melvin Taylor and the Slack band ( He will be standing in front of you )
Huge Soundstage on that one 
Try that Ayon Audio Cd I sent you. .....crank it up :) .
It has a lot of good ones .Tin Pan Alley (SRV) ,Bela Fleck, ETC.It is Worth a listen
Mushroom Jazz 6 for sure
Oh You Absolutely MUST hear the Kruder &Dorfmeister K&D Sessions .Then... Cranked UP
I sent it to you ... so you have it
Also that Nightmares on Wax should be really good .. gotta crank it a bit !
be patient .a lot of good stuff on all of those I mentioned.... should be really good on the Neoliths
   The K &D sessions will blow your mind
@dguitarnut
You are the one who needs to reign in the Nonsense.
Tekton Lore is nowhere near the Double Impact, Encore,or Ulfberht .You need to open your mind . Have you heard the Double Impact , Encores ,or Ulfberhts ? Those are the Tekton speakers that could compete. Power cord cost doe not equal performance either. You guys kill me with the "This cost 4 times more so it is better " thinking.. TOTALLY WRONG
WC, you can’t say you know how they perform until you try them. You can think you do , but you would be wrong . !
Eric Alexander is laughing all the way to the BANK !!