Mesa/Boogie TriAxis pre-amp
Rack-mount programmable pre-amp, with 8 pre-amp modes, MIDI control, etc.
Placed on the Pumpkins' official eBay account on 2011/09/29, ending on 2011/10/09 at $1500. The accompanying text read:
Mesa Boogie TriAxis Programmable Preamp. Used by Billy Corgan on the 1993-1994 Siamese Dream tour and the 1995-1997 Mellon Collie and the Infinite Sadness tour. The unit has been kept in a smoke-free studio environment. The unit comes with an attached power cable. No other cables or manuals are included. A certificate of authenticity will be included. Unit is sold "as is".