CarlB wrote:I wish to purchase small bias pins or chassis pins to attach to my st70 chassis in the front. I installed the vta board and used pio caps and there is no place to fit the original bias socket. What I have to do in order to bias my tubes now is take off the bottom cover and adjust the bias while the amp is on its side(a real pain taking the amp off my bottom shelf). What I want to do is to drill 4 small holes in the front of the chassis and attach these small hollow nail like pins to the chassis from my driver tube socket pin before the resistor where I get my bias reading. They must be isolated from the chassis but screwed onto it. I tried installing a rubber gromet around the hole I made and then slide through the pin I had, but it did not look like a nice job. It worked, but maybe someone out there knows where I can purchase these pins. I think they are hollow at one end so that you can fit your voltmeter end in the hole. Also I think on the other end they can be screwed onto the chassis without making a metal to metal contact or grounding the pin to the chassis. Any feedback or help.
thanks