Donner Ultimate Compressor Pedal Filter Effect with Normal and Treble Compression

SKU: EC888


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The Ultimate Comp is a 100% analog compressor pedal, recreating a warm, studio-like optical compression sound that is rare in compressor pedals. 

Inspired By Classics And More

The Ultimate Comp is inspired by expensive studio rack-mount optical compressor/limiter units, recreating the iconic smooth, warm compression sound. 

Easy Controls, Wide Flexibilities

The Ultimate Comp features an easy-to-use three-knob control scheme: COMP(compression intensity), TONE (brightness) and LEVEL (output volume) for dialing in your exact sound. Each knob gives you a wide control range. 

Two Modes

The Ultimate Comp offers a two-way selector for choosing from two sound settings: NORMAL, for a neutral optical compressor sound, and TREBLE, for a brighter optical compressor sound with more bite. 

1. DC 9V Jack: For a power supply, use a 9-volt DC adapter, with at least 500mA (center-negative). 

2. Tone Selector: Switches between two modes: NORMAL: Neutral compression tone. TREBLE: Brighter compression tone. 

3. LEVEL Knob: Controls the output volume.

4. TONE Knob: Controls the effect tone.

5. COMP Knob: Controls the intensity of compression.

6. Input and Output Jacks: 1/4 mono audio jacks, for connecting to your guitar, other effects, or an amplifier

7. Foot Switch : Tap to switch to turn the unit on or off. The LED will light up when the effect is on. 


    • Power Requirement: 9V DC center negative
    • Current Consumption: 10mA
    • Dimensions: 1.7in x 3.7in x 2in (4.2cm x 9.35cm x 5.2cm) 
    • Weight: 8.1oz (230g) 
    Package Includes
    • Donner Ultimate Comp Effect Pedal X 1
    • User's Manual X 1


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