Preamp: 3 x 12AX7
Power: 4 x 6550
Single channel, two inputs
6 knobs (V,MV,B,M,T,P) bs, gain switch
This amp was a modified V5 amp from the MTI days and made into a bass amp. When SLM bought Ampeg they recieved a supply of V5 heads. They made a few small component changes in the preamp and had the SVT-100. none of the SVT-100's were built from scratch.
The SVT-100t is a solid state amp, nothing in common with the SVT-100 except name.
MTI took Ampeg production to japan in the 80's. SLM took over Ampeg in 1986 and brought the SVT production back to the USA but only made 500 SVT's under the "Skunkwords" department over the next 5 years."