Still breaking in and adjusting, had to change the fixed output of my Dac to variable to get more turns use of the Smash volume pot. I've picked up a digital hash, a psssh sound ever 20 seconds or so in one channel. Will rearrange cables and try to move things around tomorrow if the SB is a blow out. Hopefully that'll clear it up. New BH power cord added to the mix. I don't know if it adds anything audible, but I like it a lot more than the thin standard power cable.
I wish the RCA's were spaced out a little more, can't use right angle cables so cables are a mess into and out of the Smash.