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 50 responses by grey9hound

Can someone explain to me why you think a 20A outlet will sound better than a 15A.
There is no logic behind that statement . If you were using a 15a outlet and not tripping the breaker, why the need for 20A outlets ?
What is different about them that will make them sound better than a 15.
I realize that they can handle 5 more amps of current , but if you are not using more than 15 amps,then tell me what makes them sound better.



whitecamaross- OP
912 posts 08-26-2018 11:46am
A friend of mine wants to bring his bhk300 Monos and do a shootout against my 2301s. Lol oh damn. What if the 2301s got smoked by ps audio ?



You just never know .. they might get smoked !

I’ll take the Mid-Fi Mac tubes over all of them.
WC finally said the right word.... Musicality.
I’ll take that Musicality over  the other attributes, that so many consider, that makes something Hi-Fi......like... Mouse Farts. etc :)

@whitecamaross 
In regards to the magico: this is WHY I chose to keep them. They easily let you hear what happened to the sound when you switch out components.
Well, So does the  Tekton Design Double Impact  speakers.... They easily show you equipment changes, front end , and cables ...they are that good  You would be shocked at their performance , but of course you will never know . because of their price tag (3K), you think that they can't possibly perform  any where near those 30k speakers .
Well , read the reviews .You would be sadly mistaken to shun them. but I know that you and many others as well . ,do shun them,  
I notice in your comments about gear , that you tend to think that if they cost more ... they will be better . 
The Double Impact, Encore , and Ulfberht all are amazing speakers that can probably beat what you have .
Also , most of them are power friendly and can be magical with many low powered Tube Amps.
Please at least read the Reviews. If you do , you should at least be interested. I wish you would  try the Tektons. I mean it would be a drop in the bucket compared to what you have been throwing around AND you get a Free 60 day trial. You don't like them, ... send them back.
It isn't all about how much you can spend or how good of a deal you can score on High Dollar Equipment, or at least it shouldn't be , but at least  it seems that way to me .  I just get the feeling that everything you are considering is all based on how much it originally costs. In other words if it was 55K Msrp  then it should be better than a 35k MSRP item. It just gets silly when you get up to those kinds of prices. I mean obviously i ought to and should be . I just think that the Double Impact or DI SE The Encore or the Ulfberht  would blow you away because of the Cost to Performance ratio as compared to the Magico.
Just my opinion of course and not meant to offend.
@viber6
Read the Reviews on them.They are plentiful. Many very respected reviewers also think so.
https://www.google.com/search?q=tekton+double+impact+reviews&oq=tekton+double+impact+reviews&...

It isn’t just one or two people that think so. Read the Tekton Double Impact thread.
I believe the Double Impacts to be some of the very  best conduits  for your gear and equipment, that i have heard,
I think there are several others on this thread who would agree. I did not say that they are The Best.I said that for the Money that the cost, i think they are the best Value ...The best performance for your dollar spent. I can hear a difference of when i change . .. for example the rectifier tubes in myMcIntosh  MC30s or when i change the ouput Tubes (6L6GC) from Svetlana to the GE 6L6GC from the 1960s . I can hear a Major difference when i change the Telefunken 12AX7 in V1 to the Mullard 12AX7. I can hear spekaer cable and Interconnect cable changes , Very easily, AND I think most everyone on this thread could hear it if they were here listening
Most of these  are minor sound changes , but I can hear them with the DI speakers and my Mid-Fi McIntosh Mx151 and MC30 tube Amps.

@viber6
I am not one to promote something just because own it
The Double Impact speakers are very revealing ,especially of component changes.
The speakers are highly detailed with good to great Bass depending on your amp, pre and cabling.The have outstanding separation of instruments and . They can sound forward if your setup sound forward .They can sound laid back , if your setup is laid back. I am using Purist Audio Dominus Fluid Interconnects and Dominus fluid power cords with my McIntosh gear. With that being said the Tektons in my room with Lyngdorf Room correction sound very well balanced with great Deep bass and bass definition and maybe slightly laid back . I think the slightly laid back sound is mainly due to the Purist Audio Fluid shielded cables and the MAC gear. This also allows you to be able to Really crank it up without being overwhelmed or having a presentation that feels like it is "Screaming" at you at high SPL levels. The Double Impacts for me, are the BEST Audio purchase, that I have ever made.



whitecamaross OP
924 posts08-29-2018 10:38pmAlright ladies and gentleman: in order to satisfy the audiophile that can’t afford the 2301s or 200.8s, I have purchased a pair of bhk 300s Monos. They will be here Friday. Are you all ready ?
Ps audio bhk300 vs McIntosh 2301s will be the first shoot out.


I say the Mc2301s will win out easily because of their "Realness".
The BHK300 will win out on Bass and Dynamics , but Give me the Realism
That is what you get with tubes and especially mac tubes... Realism
 The EQ in JRiver Media Center works very well ,also.
As an aside 
I am also using  Pandora Plus through a  Roku Ultra (HDMI out ) to the OPPO UDP 203 (HDMI in). I am also sending everything that comes from the Oppo UDP 203, using the (Audio Only HDMI out of the 203) into the McIntosh MX151 for the D to A conversion. This way I get the Benefit of having only 1 digital to Analog conversion being done. Of course anything that goes through the MX151 gets the Lygndorf Room Perfect applied. I do not know what the format or bitrate is from Pandora Plus , BUT, this is an amazingly good sound  Oh I almost forgot , The HDMI cables are the  Purist Audio Design HDMI In the previous setup i was using Purist Audio  Ultimate USB, but found the HDMI to be slightly better sounding as well as the having the ability to carry any digital format or signal. The cost for the USB is $900 and the HDMI is $200
@viber6
I ripped all of my Cds in.wav format into JRiver. I had about 600 all together .Some people will say that you do not have to use .wav files , BUT...In my system i can hear a difference in lossloess vs .wav.. JRiver is probably not the most user friendly , but it can do up to double rate DSD. It will also upconvert any lower res files up to whatever your DAC can handle.they have channels that you can stream and lots of HD Radio stations. It is a pretty awesome piece of software. I am actually hardwired to my Router /Modem  for Roku, TV, Mx150,Oppo203 .. etc 
You can also bitstream. The cost is about 40 bucks for the software.  It will run on Mac or PC. You can download Gizmo  for your phone andriod or apple ,  to control playback also. lots of cool things you can do with JRiver media Center. I put mine up on my 4K 70 inch Sony TV. It is awesome looking.. especially Black on Black skin 
https://yabb.jriver.com/interact/index.php?topic=71588.0

@curiousjim
I do not remember exactly how much space , but i originally had two 500 gig hard drives , but I recently added a 2TB USB drive and started ripping all new stuff. I have heard that 1000 cds would be about 700 Gigabyte. I would think less than 1TB, The maximum storage capacity of a CD-ROM is about 700 Mb, so as a higher bound for 1000 non-compressed audio CD files I would consider 700*1000 Mb = 700 Gb = 0.7 Tb that can fit easily in an external hard disk drive. i am using a Dell Precision T5400. I definitely now use BackBlaze @ $5 per Month.
@curiousjim
I used the JRiverMediacenter software .
It has its own rip capabilities .Just make sure you set the format type to be .wav. You can tell it where to rip to or store to also
@whitecamaross
lright guys: I just plugged in one silver 7 cable to my right speaker and a silver 8 to my left speaker. I played a few songs and used the “mono” mode that the ref10 has which pretty much outputs the same signal to both L and R channel. I can certainly hear more out of the speaker connected with the silver 7. Incredible how the magico tell me what’s going on.
Lastly, either I’m going deaf or I’m hearing a little more vocals on the right side. This happened before I got any cables so it’s not the cables. Hmmm. I wonder what it could be. Last time I had this phenomenon was when I had Belcanto 600m Monos. The powercords was what made the vocals shift from being dead center

  Please be patient on the Cable break in . It is Real




It takes some people years and others ,not that long , but it seems,myself included , that once people experience the Smooth, Open , Musicality and Realness of some Good Tube Equipment , it is very hard to go back to Solid State. :)
I said it way back when , in this thread , about being able to listen for days on end, .That is the type of sound I can live with .....forever.
Try ZZ-Top "Asleep In The Desert" .
Very Cool.. Most may have never heard it before.
Vintage Tube Services
  Free phone consultations!  Call Andy @ 616.454.3467

http://vintagetubeservices.com/mini-tubes-2/
click on stock list ... top right
@viber6
You are sadly mistaken if you really think McIntosh lives by its glitzy appearance.
There are many people who like the Laid Back sound of McIntosh.
A lot of people do not like the hyper detailed bleached sound of a lot of amps , that some consider detailed or high end. If you can’t turn it up and listen for more than 5 minutes(which i have found with a lot of hyper detailed amps), then what good is it ?
A lot of people consider the somewhat lush laid back sound of McIntosh to be very desirable,..... Musical.
Not everyone is in agreement as to what "Musical" is .and not everyone likes McIntosh.

BUT McIntosh amps hold their value better than any brand I know of !
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.
I would love to hear your take on the Marantz Ma-9s2 amps.
I have always wanted to hear them ,but never ever got a chance.
Has anyone else ever got to hear them ?
 For some reason those and the Electrocompaniet Aw600 or 400 have always intrigued me more than any other amps that i can think of.they have been on my "bucket " list .
Keep the Ref10 and sacrifice something else.
For the money , I would love to see what that equipment would sound like through the Tekton Double Impact speakers(3000 per pair).
I own them and can tell you that they are Conduits for your equipment.
More-so than any other speaker that i have ever heard.
The performance to cost ratio is Unreal.
Plus you have a 60 day trial period .
I think that is one speaker that you just MUST try
@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 
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.
@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?!!
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. 

When it comes to cables, try some Purist Audio Design ,especially Dominus and above 
@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
@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 ?
@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 ?

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.
@Whitecamoross
I Know what it is !!.
Pass Labs XA-25.
I spoiled it .. didn’t I ?
Its funny , because i was seriously considering it and reading reviews for it  a few days before you mentioned that you were going to try a fairly low powered amp from a well known manufacturer at just under $5k , that basically people are raving about .
I had a gut feeling that it was indeed the XA-25.
I can't wait to hear your thoughts on it..
@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 .