Aguilar Tone Hammer 500-Watt Bass Amplifier Head 500 watts into 4 ohms, 250 watts into 8 ohms Fully adjustable, Drive Control featuring Aguilars proprietary AGS(adaptive gain shaping) circuit. Balanced Output: XLR balanced output with pre/post EQ and ground lift switch One 1/4 Inch input jack, compatible with all active and passive basses Two Neutrik Speakon speaker outputs; Tuner out