Donner Ultimate Comp Owner'S Manual Download Page 2

Connections & Controls

types for satisfying different musicians:
NORMAL: Providing a neutral optical 
compressor sound with warmth
TREBLE: Providing a brighter optical 
compressor sound with more bite.

Carefully Selected Components 

The Ultimate Comp is designed and 
built with carefully selected components 
to ensure best sound quality and road 
performance. The solid Aluminum-alloy 
chassis ensures touring reliability, and 
True Bypass design gives you a 
transparent tone. 

Features

Compact dual-mode optical 

compressor pedal

100% analog circuit 

Wide range tone controls suitable for 

both vintage and modern players 

True bypass provides transparent tone

LED indicator shows the working state

Enduring, light-weighted Aluminum-

alloy chassisnum alloy casing and all 
metal footswitch

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Specifications

Power Requirement: 9V DC center 
negative
Current Consumption: 10mA
Dimensions: 42x93.5x52mm
Weight: 225g

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LEVEL Knob: 

Controls the output volume.

Tone Selector: 

Switches from two modes:

NORMAL: 

Neutral compression tone.

TREBLE:

 

Brighter compression tone.

TONE Knob: 

Controls the effect tone.

COMP Knob: 

Controls the intensity of compression.

Input Jack:

1/4” mono audio jack, for connecting 
guitar.

Output Jack:

1/4” mono audio jack, for connecting 
to an amplifier. 

Footswitch and LED:

Tap to switch the unit on/off. The LED 
will lit up when the effect is on.

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DC 9V Jack:

For power supply, use a 9-volt DC 
regulated by AC adapter, 500mA 
(plug polarity is positive on the barrel 
and negative in the center).

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