Tonestudio: Please tell us what power amps you used with the CAT pre-amps you have had. Musicluvr just mentioned that he had similar "mating" problems with the CAT and his Plinius amps. (Thanks, Musicluvr) I am sure that you are right about the CAT not being the at fault in a system in which the CAT and the power amps actually electrically mate properly with each other, but what about a sheer electrical mismatch?
I have to consider that other pre-amps like the cj LS16 sounded down-right subdued in my system, the likelihood that changing speaker placement is really not the issue. The (early version) First Sound Presence pre-amp sounds laid back and smooth in my system. My M3A is not aggressive with the speakers right were they are. I have a Lamm LL2 in for an audition and will start listening tonight. This will give me no fewer than four other pre-amps to compare with the CAT's sound in my system.
Don't get me wrong; I am not claiming that the CAT is an aggressive-sounding piece. I know that it does not sound that way in lots of systems. The CAT just does not have the right output impedance for my pwr amps.
The M3A "over-drove" the ASL Hurrican DT-200s also. This is not limited to CAT pre's and Cary pwr amps by any means.
Thank you, Musicluvr, for your feed back about your CAT experience. I suspected an output-to-input mismatch--just as you confirmed--because I had similar experiences with a Wright Sound dedicated phono pre-amps several years ago. It's nice to get that second experiential corroboration
I am beginning to wonder if many folks are overlooking the matching characteristics of the pre-amp to pwr-amp interface. Everyone pays lots of attention to amp-to-speaker matching, but the pre-to-pwr match involves much of the same issues; they're just at a much wider range of allowed mating than amp-to-speaker. Both involve output impedance and gain relative to input impedance and sensitivity.