Hey King! It is the 5 channel. The idea is to use 4 channels to bi-amp the mid-high and bass towers separately. But that will only be if it sounds like I remember the 300x2 sounding. Otherwise I will have one bad ass home theater amp with gobs of headroom. I am taking it (well, Jim Pittsburgh is taking it actually - thanks Jim!) to Tom's tonight to get it back to spec - I can hear bad caps in the sound. I built that cost into the $$ I paid for the amp, so that is ok. I have the PS Audio Delta 100 as a back up amp and may be buying Frank's Aragon 2004 as a backup amp as well.
Backups pieces seem to be a requirement in this vintage game, as the stuff we use is near or well beyond mean-time-to-failure. I now have a back up preamp (Soundcraftsmen Pro Four) in case the C-19 fails or just so that I can mod the C-19.
Cheers,
CTD