Had my S500 upgraded to series E and biased to Class A with great care and integrity from Jon Soderberg (formerly of Threshold) at Vintage Amp Repair. Highly recommended but give him some time to do repairs. He is demand!
Theshold Amp repair
I have a Threshold S500e amplifier that has gone kaput. Does anyone know of a Threshold repair company, since they've gone out of biz? Please e-mail or post response. I live in Los Angeles, CA. On a related note does anyone know where I could find some 32Volt 6amp fuses? Tried local Radio Shack, Home Depot, Marvac and specialy electronic shops...all treated me like I was looking for Holy Grail.