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Help with Krell KSA 50-S versus Krell KSA 200-S


KSA 50-S versus Krell KSA 200-S likes and differences??

Hi
I ownd a little Krell KSA 50-S years ago back in the nineties
I ran it with a Krell KRC-3 preamps into Totem model 1 speakers
the sound was really very good, sounded like a tube amp
and even though the amp was touted as no bass, there still
seemd to be quite a bit, at least with those speakers anyway
My reason for writing is:
I have no system currently but want to purcahse a system again and was very happy with this sound , was thinking of searching for a used Krell KSA 50-S, I have already forund a mint KRC-3 preamp. I had heard that the KSA 100-S was un kind of unremarkable, but wanted to ask any Krell guys (or gals) with experience if the larger Krell 200-S at all mimicked the sound of the Krell KSA 50-S, with the sweetness of tubes in the midrange and large dynamic floor and depth, or is the Krell KSA 200-S like a completely different animal, i.e., more solid state sounding, with virtues of its own.
dustbowl
steveaudio
331 posts
 
I'm not a Krell expert, & not sure what the "S" version was? But there was a review in the Absolute Sound when the amp came out on the KSA 200--the reviewer loved it, mainly, but went on about the heat--even in Oct., it heated up his room so much it was a big issue.

Not that I'd let that stop me if I came across one at a good price. And Totem 1's & Mani 2's like lots of power......

rcprince
3,073 posts
 
The "S" cersions were Krell's models after the KSA 150 and 250, which were heavily (but not fully, as I recall) Class A biased amps. I think they were the first Krell amps using their sustained plateau biasing feature, where the amp switched from AB to A depending on the signal strength being fed it. The KSA 200 was the mono version of the KSA 80, which was a full Class A design (the predecessor to the KSA 150 and 250) that ran really hot (as did my KSA 80).
rwwear
2,871 posts
 
The mono version of the KSA 80 was the KMA 160. KSA stands for Krell Stereo Amp. KMA stands for Krell Mono Amp.
rcprince
3,073 posts
 
Oops, sorry, you're right, I meant the "big brother" of the KSA 80. Same generation Krell. And FWIW, I thought the 80 sounded just a little better than the 200.
adomisus
7 posts
 

In stereophile they generrally compare ksa50s to ksa100but there is part were they compare ksa50s to ksa100s and they said the same as people said here but about ksa100s that ksa50s sound more sweet. I HAVE ANOTHER QUESTION.

DUE TO AUTOMATIC  BIASING ADJUSTABLE LEVEL DEPENDS FROM INPUT SIGNAL  CAN SOMEONE HEARD SOME PUMPING ON BASS FREQUENCYS ON SOME KIND SLOW BASS OR SOMETHING? I ASK BECAUSE INPUT LEVEL MESSURE CIRCUT HAVE TO STILL SOME PART OF INPUT SIGNAL AND IT SHOULD IMPACT DETAILS COMPARE TO AMP WITH FIXED BIAST. MAYBE HOW AVERYBODY CLAIM A LITTLE LACK OF BASS IS COUSE BY THAT AUTOMATIC BIASING CIRCUIT?

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