Keeley Bassist Compressor — Studio‑Grade Bass Dynamics Control
Professional‑Level Compression for Bass
The Keeley Bassist Compressor delivers high‑fidelity compression and limiting specifically voiced and engineered for bass guitars and low‑frequency instruments. Built around the THAT Corp. 4320 VCA—a compressor module found in premium studio gear—this stompbox brings rack‑mount quality dynamics control to your pedalboard with transparent, musical compression that preserves every nuance of your tone.
Whether you’re smoothing out low‑end peaks, tightening rhythmic attack, or boosting presence in a mix, the Bassist Compressor offers professional performance in a compact, rugged package.
Studio‑Grade Circuitry for Bass Performance
The Bassist Compressor uses high‑performance Voltage Controlled Amplifiers (VCAs) and a true‑RMS detector to deliver precise, program‑dependent compression that sounds natural and musical on bass guitars, active rigs, and line‑level instruments.
Unlike many stompbox compressors based on older chips, this design is built to handle:
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Active preamps and high signal levels without distortion
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Wide frequency range (over 20 kHz) so no tone detail is lost
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Extremely low noise floor for clean, confident dynamics control
You get transparent compression that enhances your sound without the artifacts or coloration often found in lesser designs.
Smooth, Responsive Compression
The Bassist Compressor’s dynamic behavior reacts reliably and musically to your playing:
Attack & Release Timing (Typical):
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Attack:
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Release:
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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 figures reflect precise transient control that smooths peaks while retaining definition and detail—critical for articulating bass lines and rhythmic grooves.
Full‑Featured Design
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Voltage Input: 9.6 V
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Current Draw: 15 mA
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Input Impedance: 1 MΩ — ideal for passive and active bass pickups
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Output Impedance: 100 Ω
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Output Boost: Up to +30 dB gain for make‑up or presence enhancement
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Bandwidth: >20 kHz — full, extended response
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Total Harmonic Distortion: 0.1% — clean, accurate dynamics
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Noise: −95 dBV — exceptionally quiet operation
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Threshold Indicator: Dual LED for compression activity feedback
These specifications make the Bassist Compressor a transparent, high‑fidelity dynamics processor suitable for studio tracking, live performance, and pedalboard integration.
Musical, Transparent Bass Control
This compressor is designed to:
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Even out volume dynamics for more consistent performance
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Enhance sustain and punch without sacrificing tone
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Preserve low‑end detail with high bandwidth and low distortion
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Work with active and passive instruments with equal confidence
Whether used subtly to tighten your low end or more aggressively for level control and sustain, the Keeley Bassist Compressor delivers professional results with minimal fuss.
BOOM!
