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REAR PANEL (CONTROLS & FEATURES)

POWER JACK

The SUBWAY BASS DI-PREAMP is designed to operate from any standard 9VDC, center “-“ (minus) power

supply using a standard 2.1mm center pin and 5.5mm outside barrel. While the DI PREAMP itself is tolerant of noise from outside
power supplies, inadvertent ground loops can be created between pedals and devices connected before and after the SUBWAY
DI-PREAMP. In the event that noise is encountered, start with powering the DI-PREAMP first, then add pedals, one at a time, noting
which pedal is responsible for introducing the noise.

OPERATING POWER REQUIREMENTS

The SUBWAY BASS DI-PREAMP is designed to operate from either its internal

9 volt battery (alkaline is recommended), or from any standard 9VDC center “-“ (minus) power supply using a standard 2.1mm center
pin and 5.5mm outside barrel. The internal battery may remain in place as there is circuitry present that will automatically select the
external DC power supply when present. The internal battery is accessed by removing the cover from the battery box, located on the
bottom of the unit. The internal circuitry is protected against accidental battery and external power supply reversed polarity connec-
tion attempts. Current requirements of the DI-PREAMP are less than 10mA, resulting in an expected battery life of about 40 hours.

PREAMP OUT XLR JACK

This output jack is fully balanced and can deliver a +4dBu (line level) with a maximum output level

of about +12dBu, at high MASTER VOLUME settings. The PREAMP OUT is designed to provide ideal compatibility and connectivity
to any pro level powered speaker, monitor or powered PA, as well as pro audio power amps (with or without crossovers), external
crossovers, and power amps with DSP crossover capabilities. The XLR jacks also make this an ideal Output for connecting to the
classic and favored compressors with balanced Inputs that many bassists use in their rigs. Combined with the THRU, 1/4” PREAMP
OUT and DIRECT OUT, the SUBWAY DI PREAMP becomes the ultimate swiss-army knife fly rig or backup tool that guarantees
getting your familiar tone even when using existing stage monitoring, power amps & cabs or PA systems commonly found at venues.
The wide range of connectivity options also makes it invaluable in more advanced rig building applications like bi-amping or multi-
amp/cab where unique tones are blended between different preamp, power and cabinet sources. Combined with the DIRECT OUT,
the SUBWAY DI is equally useful in multi-input recording applications, providing studio quality Outputs simultaneously for both PRE
<bold>and<bold> POST with GROUND LIFT switches for both. NOTE: When recording multiple PRE and POST sources, phase
relationships should always be checked/monitored as the wide range of tone controls possibilities may change the phase from your
PRE signal and POST signals. The signal is derived after all voicing and EQ filters as well as after the MASTER VOLUME control. It
is also fully phantom power protected, in the event of accidental connection to an input that has phantom power present.

PREAMP OUT GROUND LIFT SWITCH

This switch connects or lifts the circuit ground/earth/common connection from

pin 1 on the XLR PREAMP OUT connector only. Balanced outputs do not rely on the pin 1 or shield connection to transmit signal to
the amplifier. While pin 1 is almost always connected to amplifier’s ground bus, often (due to differences in potential of a building’s
ground/earth system) currents will flow between grounds if there is a common connection, resulting in hum. By lifting the ground at
the sending (preamp) end, this allows the shielding to remain in place while breaking the ground current flow that is the cause for

DIRECT OUT

PREAMP OUT

BALANCED

MIC LEVEL

BALANCED

LINE LEVEL

UNBALANCED

LINE LEVEL

SOURCE

POST-EQ

POWER

PIN 1