Keeley Compressor GC‑2 Limiting Amplifier — Studio‑Grade Dynamics Control for Guitar & More
Professional Compression & Limiting in a Pedal
The Keeley Compressor GC‑2 Limiting Amplifier brings studio‑level compression and limiting to your pedalboard in a compact stompbox format. Built around the high‑fidelity THAT Corp. 4320 VCA and featuring true‑RMS detection and premium op‑amps, the GC‑2 offers transparent, musical dynamics control suitable for guitar, keyboards, drum machines, and virtually any instrument or audio source.
Designed for players who want professional results without signal coloration or loss of detail, this pedal delivers precision compression and limiting while preserving your instrument’s full frequency range and character.
Precision Compression with Studio‑Level Circuitry
The GC‑2 uses high‑performance Voltage Controlled Amplifiers (VCAs) and a true‑RMS detector for accurate and musical dynamic response. Unlike many stompbox compressors based on older chip designs, this unit handles wide bandwidth signals (over 20 kHz) with low noise and very low distortion, ensuring no tonal information is lost.
This makes the GC‑2 a transparent compressor that enhances your tone without flattening it, giving you control over peaks, sustain, and overall dynamics with minimal coloration.
Easy Compression & Limiting Controls
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Threshold Control & LED Indicator:
Set the level at which compression or limiting begins. When the threshold is exceeded, the LED indicator shows compression activity, making it simple to dial in settings.
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Compression Ratio:
Adjust how aggressively the pedal reacts to signals above the threshold.
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Gain Control:
Apply up to +30 dB of output boost to compensate for gain reduction or to bring your signal forward in the mix.
Adaptive Attack & Release
GC‑2 uses a feed‑forward compression design with adaptive timing:
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Attack Times:
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Release Times:
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~8 ms for 1 dB
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~40 ms for 5 dB
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~80 ms for 10 dB
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~160 ms for 20 dB
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~240 ms for 30 dB
These variable attack/release responses adapt to your playing dynamics, offering a natural and musical compression behavior that works seamlessly with performance nuances.
Full‑Featured Specifications
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Voltage Input: 9 V
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Current Draw: 50 mA
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Input Impedance: 1 MΩ — ideal for instrument and line‑level sources
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Output Impedance: 100 Ω
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Output Voltage Gain: +30 dB
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Bandwidth: > 20 kHz — full audio fidelity
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Total Harmonic Distortion: 0.1% — clean, transparent compression
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Noise: −95 dBV — exceptionally low noise floor
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Threshold Indicator: Dual LED for real‑time compression feedback
These specs reflect professional‑grade performance, making the GC‑2 suitable not just as a guitar compressor but as a general‑purpose dynamics tool for studio and live applications alike.
Musical and Transparent Dynamics Control
Whether you’re looking to:
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Smooth out peaks and add sustain
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Limit signal spikes to protect speakers or prevent amplifier clipping
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Shape dynamics in a mix with subtle precision
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Use a compressor that works across multiple instrument types
…the Keeley Compressor GC‑2 Limiting Amplifier provides high‑fidelity results with ease and clarity.
BOOM!
