In perfect condition (9/10 since not brand new), the BHSE with the optional ALPS volume control is the ne plus ultra of commercial electrostatic amplifiers, a brilliant match for Stax and similar electrostatic headphones. I bought mine after hearing the 009 with BHSE at a head-fi local meet, expecting to hear only a small improvement over my Stax amplifier..........a few minutes listening and I had to get a BHSE. The difference is not subtle. Also included is a barely used (extra) set of PSVANE tubes. [I preferred the stock tubes with my R2R DAC, the PSVANE with chip based DACs, YMMV of course]. LIst price: $6800 new Selling for: $5300 or best reasonable offer (with extra set of tubes) Buyer pays paypal, will split shipping or no cost pickup/delivery in NY/NJ/northeast area.