Purity Audio Design Reference 2014 Vacuum Tube Preamp--this is the award winning, acrylic chassis preamp, one of Bill Baker's and Joe Jurzec's finest designs. I don't believe you will find a better, more musically sounding preamp under 15K and I have listened to many in my system. Primary reason for selling is I have upgraded in the Purity line. This unit has several upgrades including tube power supply, upgraded coupling caps and autoformer volume control. Included are 2 complete sets of tubes including an NOS set consisting of Phillips Rectifier tube and a pair of early 1950's 6SN7s (value of the NOS set over $350) that have ~300 hrs of use. I am also including a 6 ft Audience Powerchord SE a $900 value. I am the original owner. Overall excellent condition less any imperfections associated with construction of an acrylic chassis. I will ship in the OEM carton and cover both shipping costs in CONUS and PayPal fees. Please contact me or Joe Jurzec at Jam'n Audio with any questions. Thank you for looking!