I used an old socket 7 cpu heatsink cut in half for the mosfets, and a $2 box I found at the thrift store for an enclosure. Had a few parts lying around which saved me some money as well. Not to bad for $56! I get my tubes from a local electronics recycler for $2 ea. Was surprised they worked!
Got it all assembled. Still some tweaking to do though, but it works great!
Need to rewire the pot, it is backwards right now.
Need to isolate the mosfets from the heatsinks, doing that first.
Waiting for the 48v power supply to arrive, currently using a 32v supply from an HP printer with the correct plug spliced on.
Also, getting some buzz/hum when the pot is adjusted more than 30 degrees, any advice? I'm thinking my power might be running to close to some of the audio circuit on the pcb I used for the central location for grounds and power connections.Edited by PintoDave - 9/8/13 at 11:25pm