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Inputs and Outputs
DC POWER
Connect a 9V DC center negative power supply rated at 250 mA or higher.
USB
USB mini B connector for MIDI, web editor, and firmware updates.
IN
1/4" TRS mono or stereo input.
CTRL
1/4" TRS jack for expression pedal, remote, or MIDI.
OUT
1/4" TRS mono or stereo output.
The Raster supports multiple input and output configurations, bypass modes, and signal levels. These
can be configured using our web editor, or by sending MIDI System Exclusive strings.
The default configuration is mono in / stereo out with DSP bypass and trails, with a maximum signal
level of +8 dBu, which works well in most situations.
Power
Use a 9V center negative (Boss-style) regulated power supply that can provide 250 mA or more of cur-
rent. The plug should have 2.1mm inside diameter and 5.5mm outside diameter. This is the type of
power supply used by almost all guitar pedals, and we recommend using one designed specifically for
effects. If you have a few pedals, we recommend a multi-pedal power supply with independent regulat-
ed outputs (not daisy chained).
If our pedals detect a problem with the power supply, the bypass LED with change to magenta (or pink),
the pedal will switch to bypass and enter a low power mode. After a few seconds, the pedal will restart.
The most common reasons are that the power supply is not providing enough current, or it is an unregu-
lated voltage converter. Note that some multi-pedal supplies are rated at 100 mA except for a couple of
high-current outputs. Some multi-pedal power supplies also share current across multiple outputs. You
need to make sure the total current required for all connected pedals is within the power supply's limits.
For additional information, please see our
.
Input/Output Configuration
Mono in / mono out
Input and output use 1/4" TS (mono) plugs.
Mono in / stereo out
(default)
Input uses 1/4" TS plug.
Output uses 1/4" TRS plug with left signal on tip, right on ring.
Stereo in / stereo out
Input uses 1/4" TRS plug with left signal on tip, right on ring.
Output uses 1/4" TRS plug with left signal on tip, right on ring.
You can use 1/4" TS plugs in this mode for mono signals.