GAME CHANGER AUDIO PLASMA Rack User manual

MANUAL

Thank you for purchasing the PLASMA Rack!
Our job at GAMECHANGER AUDIO is to invent and build
new, exciting music technology that not only sounds great, but also inspires musicians
and engineers to break new ground.
PLASMA Rack is the result over 2 years of research and development, dozens of
prototypes and an incalculable amount of hard work.
We are all very happy with the result - the PLASMA Rack is a beast.
It sounds absolutely astounding.
Plus, no one got electrocuted.
Enjoy your brand new PLASMA Rack, and
- Keep on Rockin’ in the Gluten-Free World -

TABLE OF CONTENTS 2
MESSAGE....................................................................................................................................................................................................................................................................
TABLE OF CONTENTS................................................................................................................................................................................................................................................
PLASMA TECHNOLOGY..............................................................................................................................................................................................................................................
FEATURES...................................................................................................................................................................................................................................................................
FRONT PANEL (DIAGRAM).........................................................................................................................................................................................................................................
BACK PANEL (DIAGRAM)............................................................................................................................................................................................................................................
FRONT PANEL CONTROLS........................................................................................................................................................................................................................................
GAIN VOLTAGE AND BLEND..................................................................................................................................................................................................................................
EQUALIZER,VOLUME AND UTILITY BUTTONS.....................................................................................................................................................................................................
SUSTAIN, OVERSATURATE AND CLEAN GATE....................................................................................................................................................................................................
TREMOLO...............................................................................................................................................................................................................................................................
BACK PANEL..............................................................................................................................................................................................................................................................
MIDI CONTROLS........................................................................................................................................................................................................................................................
EXPRESSION PEDAL INPUT.....................................................................................................................................................................................................................................
DEFAULT BUTTON STATES......................................................................................................................................................................................................................................
CLEAN / DIRTY TOGGLE AND FACTORY RESET....................................................................................................................................................................................................
USING TWO PLASMA RACKS...................................................................................................................................................................................................................................
TECH SPECS..............................................................................................................................................................................................................................................................
MIDI CONTROL TABLE..............................................................................................................................................................................................................................................
SAFETY WARNING....................................................................................................................................................................................................................................................
LEGAL AND DISCLAIMER.........................................................................................................................................................................................................................................
1
2
3
4
5
6
7
7
8
9
10
11
13
14
15
16
17
18
20
21
22

Thank you for purchasing the PLASMA Rack!
Our job at GAMECHANGER AUDIO is to invent and build
new, exciting music technology that not only sounds great, but also inspires musicians
and engineers to break new ground.
PLASMA Rack is the result over 2 years of research and development, dozens of
prototypes and an incalculable amount of hard work.
We are all very happy with the result - the PLASMA Rack is a beast.
It sounds absolutely astounding.
Plus, no one got electrocuted.
Enjoy your brand new PLASMA Rack, and
- Keep on Rockin’ in the Gluten-Free World -
PLASMA TECHNOLOGY
A significant expansion of the unique High Voltage Distortion
concept behind PLASMA Pedal - The PLASMA RACK is a 1U sized
high-end audio effects unit designed for professional and studio use.
Instead of using LED circuits, transistors or vacuum tubes to produce overdrive,
the PLASMA RACK uses a fly-back coil transformer to express your instrument’s live signal as a series of
continuous high-voltage discharges within a xenon-filled tube.
In essence – you are playing a bolt of electricity, and the electrical discharges produced by your instrument
are instantly converted back into an analog audio signal.
The result is a quick, responsive, and extremely heavy distortion with Tons of unique character and a very
powerful noise-gating effect.
3

3 band EQ:
Gives you more tweakability and control over
sound
Input Gain control:
Can be used to fine-tune the PLASMA RACK for
any type of input signal (different pickups etc.)
Sustain Mode:
Lets you achieve long sustained notes even at
Low-Voltage settings
Oversaturate Mode:
Octave up / Overtone effect achieved by
overpowering the PLASMA Tube
Clean Gate Mode:
Use the PLASMA Tube’s gating effect on any
CLEAN Signal without the added Distortion.
Built-in PLASMA Tremolo:
A unique Tremolo and Ring Mod effect, with
adjustable Depth and Dynamic response.
Built-In Distortion Channel:
A special button combination lets you add some High-Class
Op Amp dirt to your Dry signal
3 FX Loops with switchable level control:
Modify the signal path by inserting external effects into
various parts of the PLASMA Rack’s signal chain
Connectivity:
Two Inputs (incl. Balanced Input with PAD), Two Outputs,
MIDI In, Through, and Out ports
Full MIDI Control + 8 Preset slots:
Control all parameters and values via CC Messages and
Program Change Messages with 8 Preset slots.
Assignable Expression input:
Any potentiometer on the PLASMA Rack can be assigned to
an Expression pedal
Savable utility settings
Make your PLASMA Rack gig-ready by setting up the default
boot-up states of all buttons and functions.
FEATURES 4

FRONT PANEL
POWER
turns the device
ON and OFF
DEPTH
controls volume / character
of Tremolo effect
DYNAMIC
makes Tremolo responsive
to playing dynamics LOW MID HIGH
CLEAN EQ
Enable or Disable
EQ for DRY Signal
VOLUME
master volume control.
affects both the
DRY and WET signals
RATE
audjusts the
Tremolo speed
MIDI SEND
sends MIDI messages to
other devices,
or multiple PLASMA Racks
SUSTAIN
turns on a compression circuit
that prolongs the note’s sustain
in the PLASMA Tube
OVERSATURATE
creates overtones by
overpowering
the PLASMA Tube
GAIN
controls the input
signal level
VOLTAGE
adjusts the amount of
power supplied to
the PLASMA Tube
BLEND
adjusts the mix of
WET and DRY
signals CLEAN GATE
adds PLASMA Tube’s
flickering / gating
properties
to DRY signal
PAD
cuts PLASMA Rack’s
balanced input level
by -20 dB
TREMOLO
turns on the
Tremolo effect
FX LOOP
LINE LEVEL
amplifies FX Loop signal
to LINE Level
5

BACK PANEL
MAINS PLUG EXPRESSION
PEDAL INPUT
TRS 1/4” Jack
MIDI IN MIDI OUT
can be configured as
OUT/THROUGH
(see page 11)
SEND 3 SEND 2 SEND 1
RETURN 3 RETURN 2 RETURN 1MIDI THROUGH
ON/OFF
turns the device
ON and OFF
GROUND LIFT BALANCED OUT
LINE BALANCED IN
combo XLR / Jack
(MIC / Line)
INSTRUMENT
UNBALANCED IN
UNBALANCED OUT
6

FRONT PANEL CONTROLS GAIN, VOLTAGE AND BLEND
GAIN
Lets you control the level of the input signal
coming into the PLASMA Rack.
Use the GAIN knob to adjust input levels for
different pickup types or sound sources, to
avoid signal clipping, and to achieve balance
between WET and DRY signal levels.
The PLASMA Rack will behave differently,
depending on the amount of input GAIN:
If GAIN is turned all the way down, you will
most likely end up underpowering the xenon
tube, and there will be no visible discharges in
the PLASMA Tube.
To get the most range out of the VOLTAGE
knob, adjust the GAIN knob so that when
VOLTAGE is turned all the way down there is
still a weak, visible electrical discharge in the
PLASMA TUBE.
BLEND
Lets you adjust the mix of WET and
DRY signals.
The Distortion produced by the PLASMA
Rack is quite radical, therefore Mixing the
DRY and WET signals lets you achieve
more sound variations.
When BLEND is turned all the way to the
left, only the DRY audio can be heard in
the output (Gating, EQ, Tremolo set
separately).
When turned all the way to the Right, only
the WET signal produced by the PLASMA
Tube is heard in the output.
VOLTAGE
Lets you adjust the amount of power supplied
to the PLASMA Tube, when Input signal is
detected.
At lower VOLTAGE settings the amount of signal
necessary to create a discharge in the PLASMA
Tube will be higher. In other words - only stronger
signals will pass through the TUBE, while weaker
signals (including noise, hum, sustain tails) will
not be able to travel through the PLASMA Tube.
Thus, lower VOLTAGE Settings produce a more
dynamic, responsive sound, and the PLASMA
Tube’s gating properties become more
pronounced.
At higher VOLTAGE Settings the PLASMA Tube
becomes more reactive to all signal levels.
As a result, there is more Saturation, Compres-
sion and Sustain, but the Tube’s Gating proper-
ties become less pronounced.
7

FRONT PANEL CONTROLS EQUALIZER, VOLUME AND UTILITY BUTTONS
MIDI SEND
when ON, the PLASMA Rack will start sending MIDI Information (Front
Panel CC Messages) via the MIDI Out port.
EQUALIZER + CLEAN EQ
The PLASMA Rack features a 3 knob EQ section and a CLEAN EQ button.
When the CLEAN EQ Button is switched OFF the EQ section will only apply the
WET signal produced by the PLASMA Tube. This is useful when using the
BLEND Knob to add a heavily EQ’d / Filtered PLASMA Tube distortion sound to
an otherwise clean signal, for example - adding a high, sizzling PLASMA
distortion to a warm bass track.
When the CLEAN EQ button is switched ON both WET and DRY signals will be
filtered.
VOLUME
Master Volume Control - affects the output levels of DRY and WET signals.
POWER
The POWER Button on the PLASMA Rack’s front
Panel puts the device in Standby mode, but audio
signal still travels through the Rack (True Bypass).
There is also a Mains Power switch on the PLASMA
Rack’s back panel.
FX LOOP LINE LEVEL
By default all effects units and sound processing devices
plugged into the PLASMA Rack’s FX Loops will operate
at Instrument Level .
By switching the FX LOOP Line Level button ON, the
FX Loop signal will be increased to LINE Level!
PAD
When turned ON - the PLASMA Rack’s balanced
input Level will be attenuated by -20 dB for increased
headroom.
8

SUSTAIN
Playing the PLASMA Rack at lower
VOLTAGE settings produces an
interesting, deteriorating sound,
but the note’s sustain length is
sacrificed.
Therefore, the SUSTAIN Button
on the PLASMA Rack’s front
panel switches on a specifically
designed compression circuit
that helps prolong the note’s
sustain in the PLASMA Tube,
while keeping it at the edge of
breakup.
At higher VOLTAGE settings the
SUSTAIN mode will keep acting as
a subtle compressor, although the
effect will be not as pronounced.
CLEAN GATE
The CLEAN GATE button lets you apply the PLASMA
Tube’s flickering / gating properties to your DRY
signal, without adding any PLASMA Distortion.
Turn the BLEND Knob all the way to the left, adjust the
VOLTAGE knob so that the PLASMA Tube is barely
flickering, and press the CLEAN GATE Button.
This effect has a wide range of applications, such as -
crushing drums, removing sustain from cymbals, or
adding a flickering quality to melodic lines. CLEAN GATE
can also be used to eliminate Hum and noise from other
pedals or effects in the signal chain.
Naturally, the CLEAN GATE mode can be used when
both DRY and WET signals are mixed with the BLEND
Knob, as well as in combination with the SUSTAIN and
OVERSATURATE modes.
OVERSATURATE
The PLASMA Rack’s OVERSATURATE mode is
inspired by a rectifier-style Octave-up circuit, but
due to the PLASMA Tube’s unusual properties, the
resulting effect is quite different.
Essentially, by switching on the OVERSATU-
RATE mode, the amount of VOLTAGE sent to
the PLASMA Tube is radically increased,
resulting in a lot of high harmonics.
The OVERSATURATE mode is highly reactive to
the amount of power sent to the PLASMA Tube.
At lower VOLTAGE settings, the effect will be very
subtle, whereas at high VOLTAGE settings the
signal will be turned into a continuous PLASMA
arc. As a result, a lot of the audio signal will be
completely destroyed or turned into static.
Every instrument or type of signal will have a
different VOLTAGE + OVERSATURATE
sweet-spot.
FRONT PANEL CONTROLS SUSTAIN, OVERSATURATE AND CLEAN GATE 9

FRONT PANEL CONTROLS TREMOLO
TREMOLO
The PLASMA RACK features a diverse TREMOLO
section that affects both the DRY and the WET signals.
To start off - set the BLEND Knob to the middle position and
turn the TREMOLO mode ON. By adjusting the DEPTH
knob all the way to the Right, you will hear a hard tremolo
effect on both the DRY and the WET signals. By reducing
the DEPTH knob towards the middle position (marked “0”),
the tremolo effect will become softer. When the DEPTH
knob is turned below the “0” position, the tremolo effect is
out of phase - instead of pulsating together, the DRY and
WET signals will now alternate.
The tremolo speed is adjusted by the RATE knob. As the
RATE knob is turned above 12 o’Clock, the pulsation will
become so fast that it will enter Ring Mod territory.
TIP:
Use OVERSATURATION mode to bring out the high-har-
monics produced by the Flickering PLASMA Tube.
DYNAMIC
DYNAMIC mode is a special kind of Tremolo effect, specifically designed for the
PLASMA Rack.
In essence - DYNAMIC Mode makes the Tremolo Depth sensitive to the
dynamics of your playing.
Turn DYNAMIC Mode ON, and set the DEPTH knob all the way to the Right. Now
the Tremolo or Ring effect will only be triggered momentarily by loud peaks in the
signal, such as strums, drum-hits, note attacks, etc. Other than the transients, most
of the signal will stay unaffected.
As you bring the DEPTH Control closer to the 12 o’Clock position, the tremolo effect
will stay on for a longer time, but it will start disappearing as the signal levels drop.
When the DEPTH Control is in turned below 12 o’Clock, the Dynamic effect is
reversed - the Tremolo will be triggered as the signal levels drop down. This allows
you to Strum a chord and let it ring out for a while, and have the tremolo rise up only
on the chord’s trails.
Various GAIN settings may cause DYNAMIC mode to respond differently.
10

BACK PANEL
MIDI Ports
The PLASMA Rack has three MIDI Connectors on the back panel - MIDI
IN, MIDI OUT, and MIDI THROUGH.
When a MIDI Cable is plugged into the MIDI IN Connector the PLASMA Rack
receives MIDI signals automatically, and no additional buttons or settings need
to be switched on.
The MIDI THROUGH connection can be used to daisy-chain a MIDI signal to
multiple devices.
To Send MIDI Signals from the PLASMA Rack, a MIDI Cable has to be
plugged into the PLASMA Rack’s MIDI OUT connector, and the MIDI SEND
button on the PLASMA Rack’s front panel needs to be switched ON.
The MIDI OUT connector can also be configured as a MIDI OUT/THROUGH
for more flexible routing possibilities.
For example - using one MIDI cable to send CC messages to other devices,
while also passing along MIDI signals from an external controller.
11
MIDI OUT-THROUGH TOGGLE
To configure MIDI OUT connector as
combined MIDI OUT / THROUGH:
INPUTS and OUTPUTS
The PLASMA Rack features two Inputs:
1 Unbalanced 1/4” TS Jack input (Instrument),
1 Balanced combo XLR / Jack input (Mic/Line)
& two Outputs - Balanced XLR and Unbalanced 1/4” TS Jack

BACK PANEL
EFFECTS LOOPS
The PLASMA RACK offers three FX Loop Send and Return
connections. Each FX Loop lets you insert an external effect at a
different part of the PLASMA Rack’s signal chain:
FX Loop 1 will affect the DRY Signal only
FX Loop 2 will affect the WET Signal only,
before it goes into the PLASMA Tube
FX Loop 3 will affect the WET Signal only,
after the PLASMA Tube.
12
GROUND LIFT
The ground lift switch disonnects the ground of all signal connectors from the AC Mains safety ground,
allowing to break ground loops that may form between equipment connected to the signal chain.
Use ground lift if 50/60Hz hum is heard together with audio signal.
CAUTION - at least one of the devices in the signal chain has to be connected to AC Mains safety ground for safety purposes.
Failing to do so may result in risk of electrical shock.

MIDI CONTROLS
All parameters of the PLASMA Rack can be controlled with MIDI - via CC messages and
via Program Change messages.
Configuring the PLASMA Rack’s MIDI Tx(Transmit) an Rx(Receive) Channels:
1) Turn the PLASMA Rack OFF, using the front panel POWER button
2) PRESS and HOLD the CLEAN EQ and DYNAMIC buttons until they start blinking
3) Now you can configure the MIDI Tx Channel by tapping the OVERSATURATE button a
specific number of times - for example, if you wish to set the Rack’s MIDI Tx channel to
Channel Three, then tap the OVERSATURATE Button 3 times.
4)To configure the PLASMA Rack’s MIDI Rx Channel - tap the CLEAN GATE button.
For example - Rx Channel 4 would mean 4 taps on the CLEAN GATE button.
5) To SAVE press and hold the CLEAN EQ button until it blinking stops.
6) To exit without saving press the DYNAMIC button.
Any combination of knobs and buttons can be saved on one of PLASMA Rack’s eight
preset slots.
PRESET SLOTS 1 - 8 are indicated by 8 front panel buttons shown below
To save a preset:
1) Configure a Sound that you wish to save on the PLASMA Rack
This includes the positions of all rotary knobs and all sound-related buttons (excl. Power, MIDI
Send, PAD, FX LOOP).*
2) PRESS and HOLD the MIDI SEND button until it starts blinking.
3) You will see that the POWER button is ON, while the MIDI SEND and FX LOOP buttons are
blinking (since preset slot 1 is indicated by the FX LOOP button)
Tap the MIDI SEND button to navigate through the remaining 7 Preset slots.
4) When you’ve chosen one of the eight available Preset Slots, PRESS and HOLD the MIDI
SEND button to save the Preset.
5) To Escape before saving - PRESS the POWER button.
Settings saved as Presets can be recalled by MIDI Program Change messages 01 - 08.
Program Change Message 09 will return the PLASMA Rack to actual front panel settings.
13
*CLEAN/DRIVE Toggle and EXP Pedal assignment are also saved

EXPRESSION PEDAL INPUT
The PLASMA Rack features a TRS input for any standard Foot-con-
trolled Expression pedal. By default, the EXP Pedal input is assigned
to control the Rate of the PLASMA Rack’s Tremolo effect, but this can be
reassigned (permanently or temporarily) to any rotary potentiometer on
the PLASMA Rack’s front panel -
for example: Volume, Blend, Voltage, Tremolo Depth, etc.
Reassigning the EXP Input:
1) Make sure that the PLASMA Rack is ON
2) PRESS and HOLD the PAD Button until it starts blinking.
3) While PAD is blinking, turn the desired knob to the
MINIMUM position.
4) Then turn the same knob to the MAXIMUM Position.
Temporary save (resets on reboot)
5) Without touching any other knobs PRESS and HOLD PAD to save the
EXP Input parameter Temporarily (until reboot).
Permanent save (becomes default setting)
6) Without touching any other knobs PRESS and HOLD the PAD &
CLEAN GATE buttons
7) To exit EXP Pedal assign mode without saving - PRESS the POWER
button.
14

DEFAULT BUTTON STATES
By default - all buttons on the PLASMA Rack’s front panel are in
the OFF state when the Rack is turned ON. However, if you
know that you are going to use a specific set of functions for
multiple sessions in a row, you can easily configure the
default start-up states of the following buttons:
1) PRESS and HOLD the FX LOOP LINE Level button until it
starts blinking
2) Configure the desired default states of the buttons above
3) To Save PRESS and HOLD the FX LOOP LINE Level button
4) To Escape without saving - PRESS the POWER Button
NB! Saving default button states will also save the
CLEAN/DIRTY Blend setting (see next page).
Default Button States for Utility Settings
The default states of the four remaining Front panel buttons can
also be configured:
This includes the POWER ON button - for example, if you want the
Rack to turn on automatically, as soon as the Power switch on the Back
panel is switched on (or mains plugged in)
1) While the Device is OFF - PRESS and HOLD the
CLEAN EQ & DYNAMIC Buttons until they start blinking.
2) Now you can configure the default states of the buttons above.
3) To Save, PRESS and HOLD the CLEAN EQ Button.
4) To Escape without saving Press DYNAMIC
15

CLEAN / DIRTY TOGGLE AND FACTORY RESET
DRY SIGNAL - CLEAN / DIRTY toggle.
By default the PLASMA Rack’s BLEND Knob lets you mix between the
WET signal produced by the PLASMA distortion and the DRY unaffected
signal (EQ optional). However, there is a built-in gainstage that the
PLASMA Rack uses to overdrive and compress the clean input signal
before it gets sent into the PLASMA Tube.
If so desirable - you can configure the PLASMA Rack’s BLEND knob to
Mix between the WET signal produced by the PLASMA Tube and the
Overdriven WET Signal from the PLASMA Tube’s Gainstage.
To toggle the BLEND knob from CLEAN to DIRTY
1) PRESS and HOLD the SUSTAIN & CLEAN GATE Buttons until the
OVERSATURATE button starts blinking.
2) Now the left side of the BLEND control will mix in an Overdriven signal.
3) To return to CLEAN Blend - repeat the SUSTAIN & CLEAN GATE
Long-Press.
FACTORY RESET
To return to the Factory settings and erase all saved presets
follow these steps:
1) Switch the device OFF (using the front panel POWER switch)
2) PRESS and HOLD the following 3-button combination until it
starts blinking:
3) To Complete the Factory Reset
PRESS & HOLD the PAD + CLEAN GATE buttons
4) To Escape without completing the Factory Reset -
PRESS the POWER Button
16
6/21/2019 Plasma Rack - Specifications (1) - Google Docs
IO:
Unbalanced input:
Connector
Tip-Sleeve ¼” Jack
Impedance
1 MΩ
Maximum input level
+ 11 dBu
Maximum undistorted input
level
0 dBu (Gain se ng at minimum)
Type
Instrument input, RF filtered,
true bypass to unbalanced output
Balanced input:
Connector
Combo connector: Female XLR and
Tip-Ring-Sleeve ¼” (Pin 2 and Tip hot)
Impedance
4.38 kΩ
1.5 kΩ(PAD switch on)
Maximum input level
+17 dBu (Clamped by protec on devices)
+37 dBu (PAD switch on,
clamped by protec on devices)
Maximum undistorted input
+2dBu (Gain se ng at minimum)

USING TWO PLASMA RACKS
Since PLASMA Rack is a MONO device, to achieve a true Stereo setup, you can use two PLASMA Rack Units, one for each channel.
All knob and button positions can be synchronised and adjusted on both racks via MIDI CC messages.
In the following example - RACK 1 is connected to send MIDI CC messages to RACK 2.
When you turn ON the MIDI SEND Button on the Front Panel of RACK 1 - all knob and button adjustments made on RACK 1 will be automatically
repeated on RACK 2.
When an additional MIDI Controller is added to the setup, all Program Change Messages will affect ONLY PLASMA RACK 1, unless the
MIDI OUT connector on RACK 1 is set up as MIDI OUT/THROUGH (see page 11).
All knob changes performed by an Expression Pedal connected to RACK 1, will be repeated on RACK 2 ONLY, if the MIDI SEND Button
on RACK 1 is ON.
RACK 1 RACK 2
EXPRESSION PEDAL MIDI CONTROLLER
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17
Gain and signal levels:
Preamp gain range
-26 to +12 dB
Unbalanced input
recommended level for 0dB gain se ng: -15 dB
Balanced input (PAD
switch off)
recommended level for 0dB gain se ng: -9 dBu
Balanced input (PAD
switch on)
recommended level for 0dB gain se ng: +11 d
FX loop level (Line)
+4 dBu at recommended input level
FX loop level
(Instrument)
-15 dBu at recommended input level
Volume control gain
-80 to +12 dB
PAD a enua on
-20 dB, applies for balanced input only
EQ:
Low frequency
10 Hz, -20 to 20 dB Low-pass shelving filter
Mid frequency
600 Hz, -6 to 6 dB
High frequency
20 kHz, -10 to 10 dB, High-pass shelving filter
Type
Baxandall, MIDI controllable
Tremolo:

TECH SPECS 18
6/21/2019 Plasma Rack - Specifications (1) - Google Docs
IO:
Unbalanced input:
Connector
Tip-Sleeve ¼” Jack
Impedance
1 MΩ
Maximum input level
+ 11 dBu
Maximum undistorted input
level
0 dBu (Gain se ng at minimum)
Type
Instrument input, RF filtered,
true bypass to unbalanced output
Balanced input:
Connector
Combo connector: Female XLR and
Tip-Ring-Sleeve ¼” (Pin 2 and Tip hot)
Impedance
4.38 kΩ
1.5 kΩ(PAD switch on)
Maximum input level
+17 dBu (Clamped by protec on devices)
+37 dBu (PAD switch on,
clamped by protec on devices)
Maximum undistorted input
level
+2dBu (Gain se ng at minimum)
+22 dBu (PAD switch on, Gain se ng at min)
Type
Mic/Line input, RF filtered, true bypass
to balanced output
Unbalanced output:
Connector
Tip-Sleeve ¼” Jack
Impedance
220Ω
Maximum output level
+7 dBu
Balanced output:
Connector
Male XLR (Pin 2 Hot)
Impedance
200 Ω
Type
Mic/Line input, RF filtered, true bypass
to balanced output
Unbalanced output:
Connector
Tip-Sleeve ¼” Jack
Impedance
220Ω
Maximum output level
+7 dBu
Balanced output:
Connector
Male XLR (Pin 2 Hot)
Impedance
200 Ω
Maximum output level
+ 10 dBu
FX loop send (1-3):
Connector
Tip-Sleeve ¼” Jack
Impedance
100 Ω
Maximum output level
+12 dBu (Line level)
-6 dBu (Instrument level)
FX loop return (1-3):
Connector
Tip-Sleeve ¼” Jack
Impedance
1 MΩ
Maximum input level
+14 dBu
MIDI in/out/through:
Connector
5-pin DIN (180 degree)
Type
Op cally isolated input, RF filtered
Expression pedal:
Connector
Tip-Ring-Sleeve ¼” (Wiper p, CCW ring,
CW sleeve)
Type
Designed for poten ometer-based
expression pedals, RF filtered
Switches:
PC
OVERSATURATE ON
10
OVERSATURATE OFF
11
OVERSATURATE TOGGLE
12
CLEAN GATE ON
13
CLEAN GATE OFF
14
CLEAN GATE TOGGLE
15
PAD ON
16
PAD OFF
17
PAD TOGGLE
18

TECH SPECS 18TECH SPECS 19
Gain and signal levels:
Preamp gain range
-26 to +12 dB
Unbalanced input
recommended level for 0dB gain se ng: -15 dBu
Balanced input (PAD switch off)
recommended level for 0dB gain se ng: -9 dBu
Balanced input (PAD switch on)
recommended level for 0dB gain se ng: +11 dBu
FX loop level (Line)
+4 dBu at recommended input level
FX loop level (Instrument)
-15 dBu at recommended input level
Volume control gain
-80 to +12 dB
PAD a enua on
-20 dB, applies for balanced input only
EQ:
Low frequency
10 Hz, -20 to 20 dB Low-pass shelving filter
Mid frequency
600 Hz, -6 to 6 dB
High frequency
20 kHz, -10 to 10 dB, High-pass shelving filter
Type
Baxandall, MIDI controllable
Tremolo:
Rate range
0.85 to 2600 Hz
Depth control
0 – 100%, in (posi ve range) or out (nega ve range) of
phase between clean and distorted signals
Tube:
Gas
Xenon
Discharge voltage
5.5 kV
System performance:
Frequency Response
30 Hz to 20 kHz (±3 dB)
Signal to Noise Ra o
69 dB clean channel (A weighted);
78 dB drive channel (A weighted);
Opera ng Temperature
0º to 40º C
Depth control
0 – 100%, in (posi ve range) or out (nega ve ra
phase between clean and distorted signals
Tube:
Gas
Xenon
Discharge voltage
5.5 kV
System performance:
Frequency Response
30 Hz to 20 kHz (±3 dB)
Signal to Noise Ra o
69 dB clean channel (A weighted);
78 dB drive channel (A weighted);
Opera ng Temperature
0º to 40º C
Power supply:
Type
Universal, switch – mode
Opera ng voltage
90 – 245 VAC, 50/60 Hz
Power consump on
60 W
Physical:
Dimensions
440mm (W) x 255mm (D) x 40mm (H)
Shipping box dimensions
540mm (W) x 380mm (D) x 100mm (H)
Weight
4.1 kg
Shipping weight
4.5 kg