Quote Originally Posted by Mr.Ian View Post
Thinking about trying one of these, if one comes up for sale, but how big a risk is dc on the output? Having used valve pre I always follow the adage power amps on last , off first
You should drop Steve a message. He's got enough bits to build three.

As for DC on the output, no idea but can't see a reason for there to be risk. A Techy type may answer that for you.