MJ Acoustics Ref 150 Subwoofer - Dark Oak - 150watt DC-coupled Bi-Polar Amplifier Speaker and line level inputs with Gain Control Range 80dB Neutrik Speakon connectors (Gold Plated) (High level 100k ohm) (10mtr Neutrik cable supplied) Balanced (XLR) connectors (Gold Plated) (Low level 10k ohm) Unba and more Home HiFi Systems