YS Audio is a Chinese manufacturer of audiophile level tube amps and preamps as well as phono preamps and step up transformers from Hong Kong.
YS Audio's website can be found here: www.ys-audio.com
Room 1308, 13/F, BLK C, Kai Tak FTY BLDG. 99-101 King Fuk ST., San Po Kong
(852) 93440168 - tel
(852) 23818862 - fax