Walrus Audio Canvas Mono – Passive DI + Line Isolator in a pedal-sized box (balanced XLR out)

Transformer-balanced DI/LI · Unbalanced to balanced conversion · DI/LI switch · Pad · Built for direct rigs, acoustic/bass DI, and DSP amp-in-a-box setups

The Walrus Audio Canvas Mono is a Direct Box / Line Isolator designed to provide a clean, dependable bridge between your instrument/rig and the mixer or recording interface. It’s a passive unit that converts an unbalanced signal into a balanced signal via a transformer to the XLR output, all in a pedal-sized enclosure made to live right on your board.

Canvas Mono combines two essential tools in one: DI (Direct Injection) and LI (Line Isolator). In DI mode, it’s intended for high-impedance sources like electric guitar or bass: the signal is reduced by −20 dB (or −35 dB with pad engaged) and converted to balanced, then you use your mixer/preamp gain to bring it up as needed. In LI mode, it’s meant for low-impedance sources (DSP amp-in-a-box rigs, keys, etc.): the signal stays at full level and is converted to balanced, typically requiring less preamp gain.

Because it’s passive, you won’t damage anything if you choose the wrong mode, but you may notice changes in level or frequency response. For example, if you lose high end in LI, you likely want DI.

Key features

• Passive DI + Passive Line Isolator in one pedal format
• Converts unbalanced to balanced via transformer (XLR output)
• DI / LI switch to match different source impedances
• DI mode for high-impedance instruments with level reduction
• LI mode for low-impedance sources at full level
• Passive design: safe to test modes without risk of damage
• Board-friendly enclosure for stage and studio
• Includes accessories (manual, sticker, guitar pick, pouch)

Technical specifications

• Type: passive Mono DI / Line Isolator
• Conversion: unbalanced to balanced (transformer-balanced XLR out)
• Level reduction (DI): −20 dB (up to −35 dB with pad)
• Impedance guide:
• • High impedance: > 1 kΩ → use DI
  • Low impedance: < 1 kΩ → use LI
• Country of origin: USA
• Weight: 0.37 kg
• Brand: Walrus Audio
• Note: described as a passive device; no power required for its core function

Find the Walrus Audio Canvas Mono and a curated selection of boutique stage/studio tools at onemorepedal.com, your specialist store for clean signal solutions.

A clean, practical bridge from your board to the front-of-house.