Markbass Big Bang BK

INPUTS
INPUT: impedance 2 Mohm, max. voltage 15 Vpp
AUX IN: impedance 33 Kohm, max. voltage 10 Vpp
EFFECT RETURN: impedance 33 Kohm, max. voltage 10 Vpp
CONTROLS
GAIN
MASTER VOLUME
LINE OUT LEVEL
HEADPHONE LEVEL CONTROL
GROUND LIFT (switch on rear panel)
PRE/POST EQ (switch on rear panel)
MUTE (footswitch)
EQUALIZATION
LOW: center frequency: 40 Hz; level: ±16 dB
LOW MID: center frequency: 360 Hz, level: ±16 dB
HIGH MID: center frequency: 800 Hz, level: ±16 dB
HIGH: center frequency: 10 kHz, level: ±16 dB
FILTER SECTION (with footswitch):
VPF (Variable Pre-shape Filter): center frequency 380 Hz
VLE (Vintage Loudspeaker Emulator): frequency range 250 Hz-20 kHz
OUTPUTS
LINE OUT: balanced XLR, max. voltage 20 Vpp
EFFECT SEND: unbalanced, max. voltage 20 Vpp (pre-EQ)
TUNER OUT: unbalanced, max. voltage 2 Vpp
SPEAKER OUT: speakon/1/4" combo, jack 1/4"
HEADPHONE OUT
OTHER
WEIGHT: 4.63 lbs / 2.1 kg
WIDTH: 8.86 in. / 22.5 cm
DEPTH: 9.84 in. / 25 cm
HEIGHT: 2.95 in. / 7.5 cm
OUTPUT POWER: 500W RMS @ 4 ohm, 300W RMS @ 8 ohm
POWER REQUIREMENT: 100/120V; 230V; 240V  50/60Hz (Voltage is factory preset according to region of sale)