Alas, I don't have the home theatre pass through. Although, I could see myself upgrading to another supratek preamp in a year or so - I could get a HT pass through then.
Also, my power amps only have one input, so I'm assuming that getting another preamp (pre/pro) wouldn't work well, as I'd have to keep switching out the connection to the power amps from both the pre/pro and the Suprate pre.
Also, my power amps only have one input, so I'm assuming that getting another preamp (pre/pro) wouldn't work well, as I'd have to keep switching out the connection to the power amps from both the pre/pro and the Suprate pre.