Input: An XLR-type balanced input used to connect the
Preamp Module or an External Mic.
Input Mode Switch: This switch is used to split the
'Ring' signals from a two pickup preamp module to Channel 2.
With the switch 'out', the two signals (e.g. pickup/internal
mic or pickup 1/pickup 2) are blended together into Channel 1.
By pressing this switch, the two signals are separated, and the
'ring' signal (e.g. the internal mic or pickup 2) is now processed
by Channel 2. Use this mode when processing a two pickup instrument
Phase Rev: Press this switch to reverse the phase of
one channel relative to the other. This allows you to invert
the phase of Channel 1 relative to Channel 2. In this way, you
can listen to a pickup/mic or pickup1/2 combination in or out
of phase with one another. The two combinations will sound very
different, and one usually sounds a lot better.
Mic Switch/Mic Gain Trim: Press this switch only when
using an External Mic. Leave this switch 'out' when using a Preamp
Module, or when the XLR input is not in use. The trimpot directly
above the Mic switch adjusts the gain for the mic preamp. Turn
counter-clockwise for less gain (a vocal mic), and clockwise
for more gain (acoustic guitar mic). Set this level so the 'peak'
LED flashes occasionally.
+48V: Press this switch to supply phantom power to an external
condenser mic, when using the channel as a mic preamp.
Line In: An unbalanced 1/4" pre -EQ input
for using a channel with line level signals, such as a wireless
receiver, a cassette or CD player, etc. The Line input remains
active even when using the XLR input with an external mic or
Insert: A mono effects loop for patching an effects
device or volume pedal directly into a channel. Tip = Send, Ring
Channel Output: A TRS balanced direct channel
output for sending the output of a channel directly to the board,
a tape machine, a monitor amp, etc. This output is also switched
on and off by the foot switch.
Stereo Effects Interface
Replace Switch: With the switch 'out' (the MIX mode)
the stereo effects returns are blended with the dry signal in
the preamp. Use this mode when using reverb or other effects
you wish to run 'wet only' and combine with the unprocessed signal
in the preamp. When the switch is pressed (REPLACE mode), the
dry signal is turned off and only the signal passing through
the effects loop is heard. Use this mode with a multi-effects
chain, compressor, or other effects meant to replace the 'dry'
Effect Send: A post-pan, line-level stereo send used
to drive a reverb, chorus, or other true stereo effects device.
Effect Return: A post-pan, line-level stereo input
for returning the effect output to the preamp. These inputs can
also be used as post-EQ stereo inputs for combining a CD or tape
player, drum machine, or synth with Channel 1 and 2.
Tuner Output: A channel 1 only signal for driving a
tuner. This output remains active even when the preamp is muted
by the footswitch, for tuning quietly.
Foot Switch: This jack accepts the stereo plug from
the footswitch. Closing either the tip or ring to ground causes
the 'On' or 'Loop' LEDs to be activated.
Monitor Output: 1/4" unbalanced Left and Right
outputs for driving a stereo monitor amp or stage amp. Can be
assigned to the stereo mix or Channel 1 only.
Master Output: XLR-type balanced stereo outputs for
connecting to a snake, mixing board, tape machine, or other balanced
input. Pin 2 is hot.
Gnd Lift: By pressing this switch, pin 1 of the XLR
output connectors is lifted from preamp ground. Use this to avoid
ground loop hum when connecting to a balanced input.
Power: On/off rocker switch and ac input. Wired for 120V/60
Hz unless otherwise specified.