Quote Originally Posted by dave.king1 View Post
It was a very basic single channel amp with simple tone controls and no effects 2x807 in PP, 30watts rms.

In 1965 it was a very loud amp but by about 68 and the birth of heavier rock it had nothing, hence the hike up to the Lenard 150W

You probably could have been able to increase the output power by upping the HT and upgrading the output transformer, I think from the looks of it, you probably could have been able to easily get something like 100 Watts from out of two 807 Valves in Push-Pull, I've seen a single-ended Valve amp that uses a single 813 Valve and the HT was something like 1000V DC, or there abouts, but the amp was a high-end HiFi amp.