New York Audio Labs MOSCODE 300 Hybrid tube amp . Audiophile quality. Installed new tubes and cleaned the boards. Amp is in good shape for it's age. Transformer hum and hiss noise present with no audio on. This goes away after a few minutes. Been running the amp on 85db Boston Lynnfield speakers 5ohms and sounds fantastic. Amp needs to have plenty of air flow runs hot after extended periods of time at full output. Amp is being sold for parts and recommend having serviced. 3/4 output... amp will play for over 3 hours before shutting down. Once again recommend having serviced.