INPUTSPASSIVE INPUT
impedance: 500 Kohm, maximum voltage: 4 Vpp
ACTIVE INPUT
impedance: 500 Kohm, maximum voltage: 10 Vpp
EFFECT RETURN
impedance: 500 Kohm, maximum voltage: 10 Vpp
CONTROLS GAIN
-80 dB to +35 dB range
MASTER VOLUME
LINE OUT
level control on front panel
PRE/POST EQ (for line out)
switch on rear panel
GROUND LIFT
switch on rear panel
FOOTSWITCH
mute; EQ bypass
EQUALIZATION LOW
semi-parametric: frequency 40-300 Hz; level ±16 dB
LOW-MID
semi-parametric: frequency 100-800 Hz, level ±16 dB
HIGH-MID
semi-parametric: frequency 700 Hz-6 kHz, level ±16 dB
HIGH
semi-parametric: frequency 1.5-10 kHz, level ±16 dB
VPF (Variable Pre-shape Filter)
center frequency 380 Hz (cut)
VLE (Vintage Loudspeaker Emulator)
250 Hz-20 kHz cut
OUTPUTS EFFECT SEND
unbalanced, max. voltage 20 Vpp (pre-EQ)
TUNER OUT
unbalanced, max. voltage 2 Vpp
LINE OUT
balanced XLR, max. voltage 15 Vpp
SPEAKER OUT
speakon, 1/4"
OTHER HEIGHT
3.39 in. / 8.6 cm (2U)
WIDTH
14.5" / 36.8 cm (with rack ears: 19" / 48.3 cm)
DEPTH
11.89 in. / 30.2 cm
WEIGHT
8.16 lbs / 3.7 kg
TUBES
1 x EECC81, 1 x ECC83 (JJ Electronic)
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)
Minimum ohm load for all Markbass heads is 4 ohms.
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 ear kit included.
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Bass Guitar review
TA 503 rear panel