All models are equipped with Markbass-designed power supply circuitry.

Minimum ohm load for all Markbass heads is 4 ohms.

The balanced XLR output on the LMK is POST-EQ and cannot be modified!

Markbass amps/combos are manufactured to be sold and used in the country of purchase, and they are factory preset to that country’s voltage.
Due to homologation issues, the voltage may not be changed.

Rack ears do not come included with this head.

INPUTS

INPUT A (master)
impedance 500 Kohm, max. voltage 15 Vpp
INPUT B
impedance 500 Kohm, max. voltage 15 Vpp
EFFECT RETURN
impedance 22 Kohm, max. voltage 10 Vpp

CONTROLS

GAIN CH1
-80 dB to +23 dB range
GAIN CH2
-80 dB to +26 dB range
LINE OUT
level control on front panel
GROUND LIFT
switch on rear panel

EQUALIZATION

CH1
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
10 kHz shelf; level -16 dB
VPF (Variable Pre-shape Filter)
center frequency: 380 Hz (cut)
VLE (Vintage Loudspeaker Emulator)
frequency range cut: 250 Hz - 20 kHz
CH2
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
10 kHz shelf; level ±16 dB
VPF (Variable Pre-shape Filter)
center frequency: 380 Hz (cut)

OUTPUT

LINE OUT
balanced XLR, max. voltage 10 Vpp
EFFECT SEND
unbalanced, max. voltage 20 Vpp (pre-EQ)
TUNER OUT
unbalanced, max. voltage 25 Vpp
SPEAKER OUT
speakon, 1/4"

OTHER

WIDTH
10.87 in. / 27.6 cm
DEPTH
10in. / 25.6 cm
HEIGHT
2.8 in. / 7.1 cm
WEIGHT
6.39 lbs / 2.9 kg
FOOTSWITCH
CH1, CH2, CH1+CH2, mute
OUTPUT POWER
300W RMS @ 8 ohm, 500W RMS @ 4 ohm
POWER REQUIREMENT
100/120V; 230V; 240V
50/60Hz
(Voltage is factory preset according to region of sale)

Our only two-channel head, the LMK is designed for flexibility. Its unique design allows you to set up different tone, filter and volume settings for two basses (for example an electric and an acoustic). You can also combine two different sound sources from one instrument, or use the amp to amplify your bass along with an auxiliary input such as a drum machine or sequencer---and have complete control of each input!