This is a very rare single ended class A mono amps with some decent power (24WPC). As often popular in Asia, this a 300B driver / 845 output stage amp. User bias controls for 300B and 845 are used for bias adjustment with a specific vu meter to allow you to monitor bias with ease. Highlights: Single ended design Pure class A Point-to-point wiring High quality components TUBES: Input stage: 1x 310A Rectifier: 1x 5U3C Drivers: 1x 300B Power stage: 1x 845 Single-ended and Class A amplifier. Specifications: Output power:24W (RMS) single-ended Class A Output impedance: 4, 8, 16 Inputs: 1x RCA, 1x XLR per stage Input sensitivity :1000 mV Input impedance: 100 k Frequency range: 15Hz to 35 kHz, -1.5dB Harmonic Distortion THD: 1% (1kHz) S/N ratio: 87 dB Vacuum Tube set: 1x 845 LM, 1x 300B FM, 1x 310A LM, 1x 5U3C Power consumption: 290 W per stage Dimensions: 287×574×279mm (W×D×H) Weight: 32 kg.Any other questions, please feel free to ask. The item "Line Magnetic LM503PA Monoblock Tube Amps" is in sale since Wednesday, November 17, 2021. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps". The seller is "commandperformanceav" and is located in Falls Church, Virginia. This item can be shipped to United States.