Working, Serviced, Scott Power Amplifier. The Power Supply Filter Capacitors were replaced. The low voltage, negative Bias Supply was spot on. All coupling caps tested good. The Driver Tubes are Telefunken, and tested good. The Scott 7591 Output Tubes were missing when I received the Amp. The Sylvania ones that are in there, test in the Green, but are getting close to the end of their life. This amplifier sounds really great. Shipping to the CONUS only.