Keeley GC-2 Limiting Amplifier (For Guitar and other instruments)
Keeley GC-2 Compressor and Limiting Amplifier Pedal, Rackmount style compression
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Keeley - 'GC-2'
Compressor and Limiting Amplifier

rack-mount quality compression at your feet!
Introducing the Compressor ‘GC-2’ Limiting Amplifier from Keeley Electronics, a highly musical studio-grade compressor, in a handy pedal-board friendly stompbox. Utilising high-performance ‘Voltage Controlled Amplifiers’, on board true-RMS detector and super-high-performance op-amps to deliver only the best compression. The GC-2 offers massive control over all aspects of compression and delivers fantastically musical effects.
Keeley's previous compressors were based on the iconic ‘CA3080’ or the ‘LM13700’ and work so well for that classic “Compressor Effect”, they are still used the world over by tens of thousands of players today. Keeley’s latest GC-2 is a new and different style compressor, designed to offer the ultimate in low noise and transparency. Not only does it effortlessly control truly massive signals, but it also offers a huge bandwidth of over 20 KHz. Every detail in your instruments tone is catered for.
The Keeley GC-2 represents a solid and serious investment in your tone.
stand out Features
• Dial in your dynamics with variable compression, threshold, and gain controls
• Works seamlessly with guitar, keys, drum machines, or anything else you plug in!
• Influenced by THAT Corp 4320 op amp for low noise and high sonic fidelity
• Capable of hard-knee brickwall limiting when you crank up the threshold
• Studio-grade compressor in a tidy stompbox format
Compression and Threshold

simple & intuitive operationWhen players first use the Compressor GC-2, you’ll be met with a sound that is much more easily amplified and heard. Utilising the effect as a limiting amplifier can save your speakers from undesirable clipping and unwanted distortion. Set the Threshold to scout for peaks in your signal and lessen distortion from your amp.
Just keep an eye on the Threshold Indicator LED to see what type of playing you would like to limit, it’s super easy!
Then, set the Compression Ratio Control to decide how much compression you need when the signal is above the threshold. Set Compression all of the way down for zero compression and use the ‘Gain’ control as a quick boost. Try setting Compression all of the way up for an above-Threshold, hard-knee limiter.
Navigating & Controlling the 'GC-2'

Keeley electronics
'GC-2 Limiting Amplifier'
Keeley's impressive 'GC-2' is a huegly versatile machine, so versatile infact, we're surprised they managed to fit so many tricks into such a small box! Fear not though, as ever, Keeley have laid out the GC-2 with an easy to get to grips with control configuration. Check it out further below!

FootswitchTurns the effect on/off.

CompressionTurn this knob to determine the compression ratio above the threshold. 1:1 represents no compression, higher than this showcases a hard limiter or zero volume increase above threshold.

ThresholdUse this knob to set the threshold of compression. Lower settings will cause compression to occur more often, higher settings will require you to play harder before compressions begins.

GainAdjust the control to increase output level to compensate for level lost from compression. Adjust higher than unity for a boost.

Threshold IndicatorThis LED will be green if there is no compression, red when the threshold has been met and gain reduction is being applied.
Specifications
Features | Specification |
---|---|
Pedal Type | Compressor, Limiter |
Analogue/Digital | Analogue |
Inputs | 1 x 1/4" |
Outputs | 1 x 1/4" |
Power Source | 9V DC power supply required (sold separately) |
Batteries | Optional 9V battery |
Power Usage | 15mA |
Height | 2" |
Width | 2.35" |
Depth | 4.41" |