This is great, Scott. I always wonder what the output specs are on my Onkyo Integra M-304 preamp. I will say that it drove my 300 ohm HV-1's with less effort than a FUBAR.
Maybe there IS some hope for running 800/600's from my 304! You know I try to avoid Head-Fi, but Skylab is one of the good eggs in that basket. Thanks for the link!