This amp has been babied a lot and hasn't gone past 1/3 volume. (mostly because it's so loud) I have the manual as well.
50W
2 - 12AX7 preamp tubes, 2 E34-L power tubes (I have the stock EL-34 power tubes as well)
12" Eminence Rockdriver 60 speaker
Four channels: Clean, Crunch, Lead, Ultra
Digital reverb, delay, modulation effects
Full programmability with 128 preset slots
FSM 432 MIDI footswitch
http://www.musiciansfriend.com/amplifiers-effects/hughes-kettner-switchblade-50-1x12-combo