MJ Acoustics Pro 1650 Subwoofer - Dark Oak - 500watt rms, 1000watt peak DC-coupled MOSFET Amplifier. Speaker and line level inputs with Gain Control Range 80dB. Neutrik Speakon connectors (Gold Plated) (High level 100k ohm). Balanced (XLR) connectors (Gold Plated) (Low level 10k ohm). Unbalanced RCA and more Home HiFi Systems