Well, I forgot (for a while) about my project tuber... building a tube head and using the chassis from an old Earth Super Bass B1000 100 watt head. I can't find anything on these old amps, I guess they weren't that great. I'm leaving the output section alone, except for a HAmmond 120 watt O.T. and using 6550s instead of 6L6s, and completely rebuilding the input section... complete with bar-type eye-tube level indicator just 'cause I have the tube sitting in a parts box doing a whole lotta nothing. I was using a power transformer from an old Lowrey organ, but was considering going back to the original power transformer, as the rectifier tube now overheats and I think the bias tap is blown. I need to find some sort of info on this old Earth head, just so I have a starting point for how they performed, and if the old electronics can handle the beefier 6550s. Has anybody had any experience with these things, or were they around for such a short period that nobody bought one before the company folded?