Unit has been professionally serviced and meticulously gone over by Branson SoundWorks Inc. All power supply capacitors replaced with Authenticap and CE Manufacturing can capacitors. F&T and Vishay Sprague used in cathode bypass and bias filtration positions. Any components more than 10% out of tolerance were replaced. This amplifier sounds absolutely glorious. The soundstage presents extended bass response and crystal clear, transparent highs with tremendous separation. Unit comes equipped with a pair of NOS Philips 6550's, Sylvania JAN12AT7, RCA 12BH7, Amperex 12AU7 and a Sylvania JAN12AX7. Chassis does have pitting that is sometimes typical on these original amplifiers and some of the markings on the chassis have worn off. Unit will be packed professionally and fully insured.