PS Audio GCPH and Pass X0.2 not talking?

Assuming that you have everything thing hooked up correctly. Would you have access to a volt meter? Try to measure the output of your X0.2 at the amp with the GCPH hooked up to one of the inputs (except Phono if the X0.2 has one).
Do the same thing above with your GCPH hooked up directly to your amp. Let us know what you found.

I'd give Pass Labs a call. Assuming that you are using RCA's from your phono preamp to X O.2, did you use Pass's shorting pins in the XLR's? Looking at the unit from the rear, each shorting pin should angle to the right. In other words, from the bottom XLR hole to the top right XLR hole. If the shorting pins are reversed, there is no sound.

what type of connection are you using to hook GCPH up to:
1) headphone amp
2) power amp
3) preamp

Is it the same type of connection, i.e RCA or XLR in all 3 cases?

Audiomax,

Thanks for the suggestion of using a volt meter. I'll see if I can find one at Radio Shack.

Stan,

I'm in touch with Kent at Pass. So far, he's pretty baffled, too. Contacted PS Audio, as well, and they haven't a clue.

Audiophile,

I tried scenarios using single-end as well as balanced (when possible). Everything seemed to function either way. So, RCA from GCPH-to-RCA into headphone amp was OK; balanced from GCPH-to-balanced into power amp, also OK.

dead end.