********* SOLD **********
I have two of Nelson Pass' "burning amp" amps for sale, one BA-1 and one BA-2.
These are nearly-complete prototype stereo amps that Nelson Pass donated to the Burning Amp festival in 2008. Some amps were auctioned off, others were given away as door prizes. Each amp consists of a chassis and heat sinks; speaker, input, and power connectors; power switch and fuse holder; 12 pairs of output devices matched and mounted and output boards; and PS caps, bridge rectifier and transformer. The only thing missing are the driver circuits. Boards are now available to complete these amps. Build and install the driver boards, wire it up, and off you go.
Read the main thread about the amps
here. There are spinoff threads for single ended and push-pull designs, BA-1 and BA-2.
These are amplifiers number 17 and 18 on the
list posted by Nelson. The dymo label serial numbers and original post-it notes are included!
Amp 17 is a push-pull class A amp with twelve pairs of complementary IRF244/IRF9240 mosfets. This is BA-2 which you can read about
here.
Amp 18 is a single ended class A amp with twenty-four IRF240 mosfets. This is
BA-1.
Driver boards have recently been designed to complete these amps. Board info can be found in the above threads.
Make me an offer for one or both. I figure the retail cost for the components in each amp at about $300-$400. The chassis are difficult to price. Suffice it to say that the metal alone would cost a bundle.
Each amp is very heavy. Local pickup/delivery in the San Francisco Bay area is preferred ... I'll ship if necessary ... suitable shipping boxes will have to be found. Each amp weighs around 50 lbs.
Both amps have identical chassis. You can see the fronts and backs in the first photo, and a close-up of each one in the next two photos. One cover has a very short but shiny scratch that penetrates the anodizing. Amp numbers can be seen on the post-it notes in the photos.
Both amps front and back:
Amp 17, BA-2:
Amp 18, BA-1:
