Studio-Grade Analog Compression with Uncompromising Transparence

The Suhr Koji Comp is a highly versatile, studio-grade analog compressor engineered by John Suhr and his team to offer total dynamic control without sacrificing your instrument's natural tone. Built for guitarists and bassists who demand everything from smooth, transparent peak limiting to rich, vintage sustain, the Koji Comp bridges the gap between natural feel and precise dynamic control.

Equipped with a dedicated Mix control for parallel compression, the Koji Comp allows you to blend your dry, uncompressed signal with the compressed tone—preserving your original pick attack while adding endless sustain and balance underneath. The onboard 3-position Voice switch lets you tailor the frequency response to match any rig: choose between a transparent Flat response, a mid-range boost to push lead lines through a mix, or a smooth high-end boost for brilliant, glassy chime.

• Best For: Country Chickin' Pickin', Funk Rhythm, Worship, Studio Tracking, Fingerstyle Acoustic, and Boosting Overdrive Pedals.
• Sonic Vibe: Transparent, punchy, articulate, and organic. Delivers subtle studio levelling or deep sustain with zero harsh artifacts or squashed dynamics.

Key Features & Technical Specifications

• Parallel Compression Mix Control: Seamlessly blends raw dry signal with compressed tone to preserve pick attack and transient dynamics.
• 3-Position Voice Switch: Select between Flat (neutral), Mid Boost (solo punch), and High Boost (chime & clarity) voicings.
• Dual-Color LED Metering: Visual Gain Reduction indicator changes from Green to Red to show real-time compression activity.
• Versatile Signal Routing: Fully compatible with electric guitars, bass guitars, acoustic-electrics, and line-level pedal setups.
• True Bypass Switching: Relay-based mechanical true bypass ensures complete signal transparency when disengaged.
• Power Requirements: Standard 9VDC to 18VDC operation (18V operation increases dynamic headroom).
• Enclosure: Heavy-duty anodized aluminum chassis built to handle rigorous touring environments.
• Origin: Designed, engineered, and manufactured in Lake Elsinore, California, USA.

Includes full factory warranty coverage, expert pedalboard pairing advice, and fast, fully insured shipping from The Guitar Sanctuary.

Input Impedance: 1M Ohm   
Output Impedance: 600 Ohm   
Power Connector: 9Vdc regulated, center negative, 2.1mm x 5.5mm   
Operating Voltage: 5V to 18V (nominal 9V)   
Maximum Voltage: 20Vdc   
Attack Time Range: 1MS-100MS   
Gain Reduction Indicator: 3 Color LED   
Reverse Battery Protection: Yes   
Over Voltage Protection: Yes   
Current Consumption: < 20mA   
Estimated Battery Life: 40-50 hours of continuous use   
FX Link Connector: 1/8" Mono   
FX Link Max Voltage: 3.3Vdc   
Shield → Tip: Activate On/Off   
ROHS Compliant: Yes   
Dimensions: 2.5”(W) x 4.5”(D) x 1.25”(H)   
Weight: 0.75lb