Rhythmace4218, e-mail Pass with all the specs for your preamp and asked them if there may be any issues. They're pretty good responding to e-mails.
Calypso has 29db output gain, which may be pretty high for the Pass amp. I have adjustable gain on my preamp with 600ohms out-impedance just like the Calypso and when I set the gain to 24db in balanced mode, the amp is getting driven too hard I think. I end up using either 12db or 18db output gain, depending on what I'm listening to.
But I never use the high-gain setting.
But as I said, you better ask the people who build the amps.
Calypso has 29db output gain, which may be pretty high for the Pass amp. I have adjustable gain on my preamp with 600ohms out-impedance just like the Calypso and when I set the gain to 24db in balanced mode, the amp is getting driven too hard I think. I end up using either 12db or 18db output gain, depending on what I'm listening to.
But I never use the high-gain setting.
But as I said, you better ask the people who build the amps.