Mark Levinson No. 20.6 vs. Krell KRS 200 vs. Krell KAS


Hi Everyone:

I am PERHAPS Contemplating Selling My ML No. 20.6's to Purchase a Set of Krell KRS 200's which I have always wanted. I am though Very Satisfied with the Sound of My 20.6's and I am afraid, that although the KRS 200's will undoubtedly improve the Bass Area, that this improvement will come at the expense of Fine Micro-detailing, where I believe, that the 20.'6s are some of the best amps perhaps ever produced.

I am from Europe, so I would like a 220-240V Version of the KRS 200's, Which is also what I have read, gives the best results sound-wise. Regarding though, which Power-Installation I should install, then I would like to ask, that since these Amps have a Power Consumption of 160Watts EACH, what kind of Breakers should I install in my house? I've heard, that if you install too small Breakers, then they will either have the Breakers cut out or they will sound too "Thin" and/or  "Hungered" for more Power. But what are "Too Small" Breakers? Would a Dedicated 20 Amp Breaker for EACH Amp be enough? I could install both 30, 40 or 50 Amp Breakers, but I have to say, that I Very Rarely Hear music at Loud Volumes. I Prefer to sit late at night and hear music at fairly low levels, so the question is, where to stop Breaker-wise? Perhaps both 30 and 40 Amp. Breakers is still Recommendable as well as Wise, but the question is, whether a 50 Amp Breaker for EACH Amp, isn't Overdoing it??? What do you guys say?

What is Your oppinions about this? Have any of you heard both The 20.6's and the KRS 200's either together side by side or with some time-span in between?

Another Question is regarding the KRS 200's in comparison to The KAS's. Some say that The KRS 200's are The Best Pure Class A Amps, Krell has ever made, but how does it compare to the KAS's, which have Sustained Plateau Biasing instead?

Any and Every Comments and Experiences are Very Welcome.

Have a Great Audio Day.

Sincerely Thomas.

ferrari365gtb

Showing 14 responses by ferrari365gtb

Hi cleeds:

Thanks Very Much, But cleeds, would you really be able to hear a difference between for instance a 40 and a 50 Amp Breaker???

Hi audiotroy:

Thanks for your comment. I am not that turned off by, having to recap them. I have just spent $5000USD on Servicing my No. 20.6's at an Authorized Repairshop and from there I got an Certificate of Authenticity and For Correct Service and Repair with Original Parts Authorized from ML Themselves and this has brought me peace of mind as well as a Huge Price Increase if I should decide to sell them. Apart from this, the seller says, that they have both been recapped and so that shouldn't be a problem, but of course, I will run it by my cousin, which has his own repairshop for high end audio, just to be sure.

I Never liked tthe MRA's They are too big and unhandy and are practically unsellable, unless you practically give them away for a price, which is far from thei Original Price. I never understood, why, if Krell Absolutely wanted to make a statement amp, why they didn't just do, what they did with the KAS, with Power-supply and Audio-part Seperate. With the 314 Kilos, which each Monoblock weighs, then at least each part would "ONLY" weigh around 160-170 kilos, which at least is manegable, between 3-4 people, which 314 Kilos, sure as hell ain't.

I don't know much about T+A, other than  they supposedly are german in Origen and High on the hit-list of the german magazine "Audio".

My Ultimate Amps would be a set of Pass Labs XS300's, but they are to far out of reach for me economically and besides, I just always wanted to try out the KRS 200's, but Gotta sell the 20.6's first, which I'm not sure I really wanna do, since they really do sound Amazing...

Sincerely Thomas.

Hi gs5556:

Thanks for your Response. I agree with you in terms of that 20 Amp Breakers, should be enough, but there seems to be something devious about the KRS 200's, so I'm not sure normal Amp and Wattage Calculations apply here, but in theory at least, you should right.

Very Interesting about you No. 20.6's. I'm kind of in the same situation. I've had mine for 2½ years now and I Love Them a Lot. They do things, that in my opinion, no other amp can do, which is why I am so in doubt of whether to go for the KRS's, since, as I say in the beginning of this discussion, that I'm afraid, that I will miss out on Micro-detail and other things, that 20.6's just does so incredibly well, so it warms my heart to hear you say that. I would love for you to give me a comment on my other discussion and tell me your opinion on Pre-amps.

Here it is:

https://forum.audiogon.com/discussions/mark-levinson-no-28-compared-to-other-ml-pre-amps?highlight=Mark%2BLevinson%2BNo.%2B28

Hope to hear from you here as well as in my other thread.

Sincerely Thomas.

Dear rcprince:

Thanks for your knowledge. I BELIEVE that there shouldn't be a problem in getting either 30, 40 or 50 Amp Breakers, but I'm not sure, I'll have to ask the electrician, who built the house, what the maximum Ampage, the installations can take. Regarding the light dimming, when turn on, that is something I already experience, when turrning on my No. 20.6's. Of course we are talking about some serious juice here, but still when you say, that it would probably trigger a 20 Amp Breaker, then it kind of sounds like the KRS doesn't have any circuit to dampen the huge current draw at start-up??? I know my 20.6's do have that, although the lights still do dimm, when turned on, but doesn't the KRS 200 have any such dampening circuitury when turned on???

I don't know either, which is the best, the KRS 200 or The KAS. That's why I really want to know, since again, many have said, that the KRS 200's are the Ultimate Amps, which Krell ever made...

Sincerely Thomas.

Hi Dave:


Thanks so much for your comment. I will get as large Circuit-Breakers as possible as well as some 3/8 Cables, which is used for Induction Stowes, which usually are connected to 50 Amp Breakers. We already havce this in our house, so the Circuits MUST be able to take it, I just remembered, so it shouldn't be a problem. First though I have to sell my No. 20.6's and I am not sure, I can Emotionally, since they Definately are some ofg the best amps EVER Made and I Love Them To Death and it appears that gs5556 Agrees with me. I would love to try out the KRS 200's, but I must say, it is more curiosity, than it is a conviction, that it will better my sound, 'cus I really don't think it will. Know though I have put my 20.6's for sale, so we'll see, what happens???

Many Thanks Dave and I wish you a Great Audio Day/Evening with your Monster of a FPB600. By the way, I've always wanted the FPB750Mcx's...They Are Awsome...

Hi Audiotroy:

I will Certainly Give The T+A a listen, before I decide.

Thanks a Lot.

Sincerely Thomas.

Hi Dave:

Again Thanks So Much for your Wonderful Comment. The Krell FPB600 Has Gotten a Very Very Good Review I Believe it was in Stereophile, where they basically couldn’t imagine a Better Amplifier, The ML No. 33 (Which I BTW Never Liked for Many Reasons) Aligned it soundwise they said, which they had never thought would happen, THAT’S how good the FPB600 Apparently was. Funny Enough, The Only Krell I’ve EVER Heard, was a couple of FPB450Mcx’s, when I was in Hong Kong in 2006, picking up my at the time Dream Amplifiers, namely The Stax DMA-X2 Monoblocks (It’s a long story!!!). The Krell 450Mcx's Played in a Sea of highend audio, some guitar-music, but I don’t know what speakers they were playing on and they weren’t set up for listening seriously, but I do remember, that the sound was Crystal Clear.

Nop, you didn’t miss my mentioning my speakers, because I didn’t. I run the 20.6's through My ULTRA RARE Stax ELS-F83X Electrostatic Speakers, which I bought in 2007 and there hasn’t been a Speaker, which in my opinion has beat it since. They are fairly ineffective, I believe at 89db’s and I believe they run at 4 Ohms, at least Average, so they are a fairly difficult load, but not excessively. The two, ML and Stax are a Match made in heaven. I had a pair of Pass XA160.5’s attached to them before and thus when I later bought the 20.6’s, you wouldn’t believe it, but the Bass Bettered Significantly. The 20.’6s have a Very Very Special Precise and "Golden" Sound, which no other amp, that I have ever heard has had. That is why, I don’t believe, that the KRS’s will better the sound in the areas, where I feel, the ML sound is so strong. Only the Bass, I am sure they will, but still I would just love to be able to have the KRS’s in my livingroom, although I’ll probably regret it, if it means, that i have to sell my 20.6’s.

Lot’s of Audio Grettings to you Dave.

Sincerely Thomas.

Hi Dave:

You may be right about that. I'll certainly consider it, Thanks Dave.

Best to you yourself.

BTW: If you feel, that you are missing some aspects with the FPB600c, have YOU then thought about changing out in that department and if so, then what?

Hi Dave:

Sounds Very Interesting with those DR-9's. I hope that you will be able to get that Upgrade-kit for the other one as well, so that you can drive them Bridged. What are their watts as Stereo Amps??? 50W? 100W? I suppose, that if they are for instance 100W, then you should be able to Quadruple the Amount of Watts to about 400W when bridged, Correct Dave??? I at least remember this from my early hi-fi days back in the late 80'es and early 90'es, where I had a couple of 100 Watt NAD 2200PE's, which nominally were 100Watts in Stereo, but a Whopping 400 Watts Bridged. Together with a couple CW D-9E, They Definately Rocked The Interior Pants off Your Grandmother, jijiji!!!

A guy I know in the states, which I have talked to about His  and Mine No. 20.6's, has TWO Pairs of No. 20.6's. One pair he bought around 20 years ago and they have been stored in their boxes for all this time. He wanted to sell them at first for $10.000USD, but retracted the add, since he would rather try to bridge them, so as to get more Power to his B&W 801N's. I haven't heard if he has done it yet, but one of these days, I'll drop him a line or two, to see how THAT project is going.

I would love to hear, how and when you are coming along with 1) Finding the up-grade kit (Have you seached on ebay??? Sometimes you can find some pretty odd and rare things there!!!??? 2) Getting them into Bridge Mode (Is it just a switch on the back of it or is it more complicated than that???

Yeah its fine, to crank up the volume on the Krells, but I Cherish More The Silent Nights at 9-10 O'Clock in The Evening or Later still, where everybody has gone to bed, including my wife and then Gently and Fluently raise the volume JUST ENOUGH, so that you can hear all details. That is why I have invested heavily in cables, so as to hear the finest details at LOW Volumes. That is in MY opinion, what separates a High-End Stereo from a Normal Hi-fi or Low-end Stereo, that you falsely believe, that if you crank up the volume, you'll hear more low level detail...WRONGGGG!!! You'll hear more of EVERYTHING and thus the sound that obscured the low level detail before at LOW volume levels, will ALSO obscure these same low level details, when you crank up the volume...

Lot's o' Luck, with finding that kit, but until then, you can still enjoy the stereo version at low volume levels, where it counts...

Have a Great Audio Day.

Sincerely Thomas.

Hi rcprince:

Thanks for your comment. It may be, that the 20.6's are a little on the dark side, although I certainly don't feel that way. In comparison to my Stax DMA-X2's, which I has between 2006-2009, they were a Significant Improvement in casting light on the soundstage. The Stax's were MUCH Darker in this Discipline.I feel the 20.6's cast exactly the amount of light onto the soundstage as they are supposed to and I don't feel, that I miss out on anything there. They have the exact same brightness as my Pass XA160.5's I had between the Stax's and my 20.6's, so I feel they are very correct in this aspect.

I don't think the KRS's will do much in that direction either, but it'd still be an experience of proportions, to have them standing in my livingroom, but I believe, that it should NOT be at the expense of my 20.6's as they are and I believe that they will be for a Very Long Time, My Ultimate References at which I Judge Other Amps.

Have a Great Audio Day rcprince.

Sincerely Thomas.

Hi jafant:

Thanks, we think so too, I believe I speak for everyone. Please join the conversation. What gear do YOU have???

Have a Great Audio Day, jafant.

Sincerely Thomas.

Hi gs5556:

Thanks for your feed-back. I don't know the CAT Pre-amp. Have got to search on it.

I myself have a No. 28, which in MY opinion is The Best Pre-amp I Personally have ever heard and as I say in the other thread I sent you, I've had both the Audio Research LS26 (The one JUST below the renowned Reference 3) as well as the Pass XP20, which supposedly should be one of the best pre-amps in the world at the time of around 2009-2013 and in my opinion the No. 28, although it has more than 20 years on its back, beat BOTH of them in terms of Preciseness, Goldenness and Passion for the music in general. Yes There exists both the No. 26S, 326S and The No. 32, but another guy I talked to, which has had all of the above, said he loved his No. 28 and did NOT think, that none of the above were an approvement over the No. 28. They may have been different in their respective sound, but all in all NOT an improvement. the only one who in his opinion significantly beat the No. 28, was his new No. 52, but here we are also talking about a $30.000USD investment or MORE, if you buy it in Europe, where it is around 30.000 Euros. The No. 52 is my ULTIMATE Dream Pre-amp, but that won't be for a while...Say 20 years or more!!!???

Have a Great Audio Day gs5556.

Sincerely Thomas.

Hi panprot19:

Sounds Very Interesting with your KRS 100's I've heard, that they should sound sweeter than the 200's. Do you know how much they weigh??? It's something around 80 kilos if I'm not mistaken.

That they should beat the 33H's is certainly something. I've seen a pair on youtube, I believe the owner is from Finland and he drives a set of Apogee's (I Believe They are Scintillas, but I'm not sure) and it sound pretty good on the recording.

Yes Please let me know, when you get the caps and bridges changed, but what it "nichicon gold"???

Have a Great Audio Day.

Sincerely Thomas.

Hi jafant:

Wow, that's quite a list. But all of the different brands you mention, make different gear. Pass Labs is mostly amplifiers, together with Krell, Where Sony ES can by almost anything, from amps to CD-Players to Vinyl, so what are gonna put where and what do you have as of now??

Sincerely Thomas.