Originally Posted by: Letchworth40.... Could it be that i have a solid state preamp with tube power amps and vacuum tubes? Does this make sense?

[font=trebuchet ms]Uhh, no...

Your power tubes are 6L6GC's IIRC, and the Compactron is probably a 6K11 or 6Q11. There may be one or more 12AX7 or 12AY7 or 12AU7 preamp tubes as well. There may be a 5U4 rectifier tube instead of solid-state diodes.

You should write the tube numbers on the chassis next to each tube, so you know which tube goes in each socket.

There are potentially deadly voltages present inside a tube amp chassis, even after it's turned off. Don't go there. Contact Bob at >Eurotubes< and get the straight goods from an expert.[/font]