PS Systems EB100S

Digitally-controlled tube amp with dual LFOs, stereo effect loops, etc. Circa 1992-3.
[product info site]

Placed on the Pumpkins' official eBay account on 2011/09/29, ending on 2011/10/09 at $2000. The accompanying text read:

PS Systems EB100S Digitally Controlled Tube Amplifier. Used by Billy Corgan. Very rare unit. Approximately 60 units were produced. Serial number is TA 003033. PS Systems produced the EB100S for approximately 3 months before they went out of business. Only a handful are known to exist. More information can be found at eb100s.com. The unit has been kept in a smoke-free studio environment. No cables or manuals are included. A certificate of authenticity will be included. Unit is sold "as is".