Mark Bass Studio Pre

INPUT

impedance: 500 Kohms, max. voltage: 10 Vpp

CLEAN CHANNEL

GAIN SECTION
Tube: 1xECC83S, gain: 50 dB
SEND/RETURN SECTION
Return impedance: 50 Kohms
Send output impedance: 1 Kohms
Effect loop type: parallel
PURE PARAMETRIC FILTER SECTION
Frequency range: 60 Hz – 2 kHz
Level: +/- 16dB
Q: 0.5 - 8
EQ SECTION
Center frequency: 100 Hz (low), 800 Hz (mid), 4 kHz (high), +/- 16 dB

AMP CHANNEL

AMP 1
Tube: 2x ECC83S
AMP 2
Tube: 1x ECC83S
AMP 3
Solid State
COMPRESSOR
On/off switch on front panel
EQ SECTION
Center frequency: 100 Hz (low), 4 kHz (high), +/- 16 dB
FILTERS
VPF (variable pre-shape filter, 380 Hz cut); High-pass filter (20 Hz – 1 kHz, -3 dB)

OUTPUTS

AMP LINE OUT
Balanced XLR, max. voltage 10 Vpp
CLEAN LINE OUT
Balanced XLR, max. voltage 10 Vpp
MIX LINE OUT
Balanced XLR, max. voltage 10 Vpp
Unalanced ¼”, max. voltage 2.5 Vpp
TUNER OUT
Unalanced ¼”, max. voltage 2.5 Vpp
FOOTSWITCH
Amp channel (on/off) / Pure Parametric Filter (on/off)

OTHER

HEIGHT
3.39” / 8.6 cm (2U)
DEPTH
11.9 in. / 30.2 cm
WIDTH
14.5" / 36.8 cm (with rack ears: 19" / 48.3 cm)
WEIGHT
5.9 lbs / 2.7 kg
POWER CONSUMPTION
60W

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