Beautiful Classic Valve Libra II line stage preamp. Pair of Philips 6922 tubes installed. Gregg van der Sluys (the builder) is a master technician and, over the years, has refurbished numerous vintage amps and preamps for me. He is my go to tech because he is meticulous and stands by his work. http://www.classicvalve.ca/about.shtml Shipping Available