Golden Ratio

Name: Golden Ratio
Brand: Crazy Tube Circuits
Availability: OnlineOnly

Compressor

Three analog compressor circuits in one -- FET, OTA, and optical at the flip of a switch.

The Golden Ratio (Phi V2) packs three independent all-analog compression circuits into a single compact enclosure. A toggle switch selects between FET (crisp, punchy, 1.5:1 to 10:1), OTA (aggressive limiter, 1:1 to 20:1), and Optical (smooth, 1.5:1 to 15:1) modes, each with distinct attack and release characteristics.

Six knobs give studio-level control: Volume (with makeup gain), Blend (parallel compression mix of dry and compressed signal), Ratio, Threshold (with red LED indicator), Attack (1-33ms range), and Release (50ms-4s range). Internal controls include a FET ratio/distortion trimmer and a high/low output gain switch (+8dB boost). An internal headroom switch selects 9V or 18V operation via charge pump.

Soft-click bypass footswitch with true bypass via high-quality relay. Works for guitar, bass, or any instrument needing compression. 9V DC, center-negative.

Demo Videos

Specifications

Power9V DC

Polaritycenter-negative

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Crazy Tube Circuits

Golden Ratio

Compressor

Three analog compressor circuits in one -- FET, OTA, and optical at the flip of a switch.

Soft-click bypass footswitch with true bypass via high-quality relay. Works for guitar, bass, or any instrument needing compression. 9V DC, center-negative.