15th Anniversary limited edition. Just over a decade ago, Marco De Virgiliis started pioneering small, lightweight amps; the Markbass Little Mark heads started a new era in bass amplification, inspiring many other companies to follow their lead. Now, you'll be amazed that such a warm, rich and “explosive” sound comes from an amp smaller than our groundbreaking Little Mark heads! And—despite its small size—the Big Bang is packed with extra features that customers have been asking for: aux in, headphone output with level control, plus mute and VLE and VPF filters with footswitch control. Other features, already appreciated by Little Mark users, include a simple and effective 4-band EQ, effects loop, and level control and pre/post EQ switch for the XLR DI output.SpecsInputsInput: Impedance 2 Mohm, Max. Voltage 15 VppAux in: Impedance 33 Kohm, Max. Voltage 10 VppEffect Return: Impedance 33 Kohm, Max. Voltage 10 VppControlsGainMaster VolumeLine Out LevelHeadphone Level ControlGround Lift (Switch on Rear Panel)Pre/post Eq (Switch on Rear Panel)Mute (Footswitch)EqualizationLow: Center Frequency: 40 Hz; Level: ±16 dBLow Mid: Center Frequency: 360 Hz, Level: ±16 dBHigh Mid: Center Frequency: 800 Hz, Level: ±16 dBHigh: Center Frequency: 10 Khz, Level: ±16 dBFilter Section (With Footswitch):Vpf (Variable Pre-shape Filter): Center Frequency 380 Hz Vle (Vintage Loudspeaker Emulator): Frequency Range 250 Hz-20 kHzOutputsLine Out: Balanced XLR, Max. Voltage 20 VppEffect Send: Unbalanced, Max. Voltage 20 Vpp (Pre-eq)Tuner Out: Unbalanced, Max. Voltage 2 VppSpeaker Out: Speakon/1/4"" Combo, Jack 1/4"" Headphone OutOtherWeight: 4.63 Lbs / 2.1 kgWidth: 8.86 in. / 22.5 cmDepth: 9.84 in. / 25 cmHeight: 2.95 in. / 7.5 cmOutput Power: 500W Rms @ 4 Ohm, 300W Rms @ 8 Ohm