krell ksa 80 vs. krell ksa100s

One thing to keep in mind is that for every doubleing in output power there's only a loudness increase of 3db. Three db is just a little more than noticeable.

ihave not heard the ksa 80 but owned a ksa 100s . ifound this amp to be on the soft side and did not seem that it reveals the inner detailing and thought it did not really for a krell go the extra mile in the bottom end. i would call krell and ask them what speakers you are using the amps on and what they feel is the BETTER amp. since you are buying used they most likely will not have a problem answering your question. good luck, bill

I think the KSA 80 is a sweeter amp, as far as the extra wattage with the KSA 100, not much of a difference, if any.