SansAmp Tech 21 PSA-1 pre-amp
Rack-mounted pre-amp/effects processor.
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Placed on the Pumpkins' official eBay account on 2011/09/29, ending on 2011/10/09 at $307.37. The accompanying text read:
SansAmp Tech 21 PSA-1 Preamp. Used by Billy Corgan. 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".