Preamp for Pass

I'm seeing the LS26 SE (RCA) output impedance at 350ohms. Where are you getting the 20kohm spec?

Can't see why the LS26 would have an impedance mismatch issue with the Pass amps, seems to be perfectly within the theoretical impedance considerations, as it has fairly low output impedance to a tube line stage (350ohm SE) - which does not mean it is an ideal match sonically, just that impedances should not be of significance in the pairing.

Whatever problems there were, it was not an impedance issue, the Cary has only a 400ohm output impedance - that should work with most any amp, even Pass' "tough" input impedances.

20kohm input impedance is the minimum recommended amp load according ARC.

Should be fine - the XLR input impedance of the XA30.5 is 30kohm (the RCA however is 15kohm and that might be pushing it, don't know without trying it, sometimes listening overrides theory).

I did forget to mention, that the Joule LA150 Special Edition sounded absolutely wonderful with the XA30.5 --- though single ended (no XLR which may be a non starter for some).

Which one? :)

OP, what next? What are your thoughts so far in response to all this feedback?