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DI (Direct Injection) – Use DI mode when connecting an unbalanced, high impedance source (Electric 
Guitar, Bass Guitar, etc). The signal will be reduced by -20dB (-35dB with pad engaged) and converted 
to a balanced signal via the transformer connected to the XLR output. Use the gain on your mixer or 
preamp to bring the signal up to line level.

LI (Line Isolator) - Use LI mode when connecting your unbalanced, low impedance source (Amp + Cab 
Sim like the ACS1, keys, etc.). The signal will remain full volume and be converted to a balanced signal 
via the transformer connected to the XLR output. Less preamp gain will be required in LI mode.

     Note - When deciding between DI or LI, check with the manufacturer of your gear to find  
     the output impedance of the device you are wanting to interface. For a general guide:
 

High Impedance = anything above 1k = Use DI

 

Low Impedance = less than 1k = Use LI

     If you lose high-frequency information when using LI mode, then you should probably be  
     in DI mode. Both left and right channels are affected when using the DI/LI switch.

PAD – Enables a -15dB input pad (Only in D.I. mode) for reducing hot signals in order to minimize 
distortion.

GND LIFT – Isolates the GND pin on XLR to help reduce hum if present. Leave out for normal operation.

SUM – When disengaged (out), the left input connects to the left thru. The right input connects to the 
right thru allowing the use of stereo amplifiers.
When engaged (in), Sum connects the left and right thru jacks together to combine the signals for 
running into a single amplifier (use either thru jack).

THRU - The Thru jack is a pass through that can be plugged into a guitar amp or other source. 

You are the artist. Your sound is the paint, and 
this is your canvas. After years of creating tone-
painting devices, Walrus Audio is releasing 
The  Canvas Stereo Direct Box/Line Isolator. The 
Canvas is designed to remove any resistance 
between you and your audience by giving a 
pristine, sonic foundation upon which to build 
your dual-channel masterpiece. From houses of 
worship to the dive bar downtown, Canvas Stereo 
is built to be the performance palette that goes 
wherever you are making your music.

STEREO

CANVAS

WHEN TO USE THE CANVAS

AT THE VENUE

AT THE STUDIO

VARIOUS INSTRUMENT RECORDING 

KEYS/SYNTH

GUITAR

GUITAR

CANVAS

CANVAS

CANVAS

DSP AMP

DSP AMP

FRONT OF HOUSE

FRONT OF HOUSE

DAW

Use Canvas Stereo to connect your instrument to 

a variety of sources. The following diagrams are a 

few examples of use cases. Fun tip: The left & right 

jacks are independent and can also run two mono 

sources. 

USE THE THRU FOR TWO DIFFERENT OUTPUTS

GUITAR

CANVAS

DSP AMP

FRONT OF HOUSE

AMP

XLR OUT

THRU OUT

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