The fact that these manufactures cant offer you a simple schematic is beyond me.
I believe thats a straight forward design so a good tech familiar with tubes.
I had the Vtl deluxe 300's tech repaired them in a heartbeat/
Good luck!
VTL information
I recently bought a pair of VTL Deluxe 240 monoblocks. The seller didn't have the owners manual. I contacted VTL and was told they don't have any information on amps that age (1993-1997). It has David Manley on the front of the amp too so I called them and was told they engineered them but they were made by VTL. Although they were more helpful still now information. If someone could help me with any information I would greatly appreciate it. I want to get them serviced before trying them and am anxious to hear them.