The Xiang Sheng tube headphone and pre amplifier model 780B Silver, also known as Xiangsheng, is a high-quality Hi-FI designed for home audio systems. It offers excellent sound performance and is a popular choice among audiophiles. In like New condition bought brand new and upgraded the tubes to European and American brand name tubes. Very few hours used before I upgraded my pre to Dared SL-2000A.
eBay