This is probably a little before many bassists' birthdays, but I have a 200W all tube (4 12AX7's & 4 6550's) which was made for me by a company called TNT. The company was located in the Venice Beach/Marina area of SoCal in the late '60's and made amps for the band "Canned Heat". The next time you see the movie Woodstock, you will see the amp on-stage with Canned Heat. This piece of gear has been re-tubed and re-biased as recently as two years ago and still roars. Have any of you ever heard of these amps? I know this is a little vague but, you never know!!