Valvet. Handmade near Hamburg Germany. 2 stage Preamp Tube- Solid State. 2 pair (4) Power supplies, 65 watts Class A Power. Original owner, boxes, documentation. 4 inputs, Balanced, & RCA connections.Preamp purchased 2017, Mono blocks upgraded from Valvet A4 to A4e 2022. Mint condition. Carbon fiber tops.These were made custom in Red & Black and signed personally by Knut Conrlis, owner of VALVET in Germany. I purchased from Alfred at High End Electronics. the distributor in USA. See links for details and back shots. I retired. Live in a condo on Lake Michigan and do not have the listening space I did in Chicago. Soulshine 2 Preamp list. $8,990A4e Monoblocks list $9,900 VALVET | highend-electronics, inc. VALVET A4e Monoblock amplifier Fedex Ground shipping $200? USA only