Crazy Tube Circuits Golden Ratio Phi V2 Compressor Pedal

Precision compression tailored for every playing style.

The Golden Ratio Phi V2 by Crazy Tube Circuits offers three selectable compression circuits—FET, OTA, and Optical—each with unique dynamic characteristics. Whether you need fast transient control, punchy dynamics, or smooth sustain, this pedal delivers studio-grade compression with parallel blending, adjustable attack/release, and an internal voltage switch for enhanced headroom.

Key Features

• Three Compression Modes – Select between:

  • FET – Uses a feedback detector, adding slight color and allowing super-fast response.

  • OTA – Uses a feed-forward detector, ideal for catching fast transients and limiting.

  • Optical – Uses a hand-selected photocell, offering smooth attack and release for organic, musical compression.

• Blend Control – Mix compressed and dry signals for parallel compression.

• Internal Voltage Switch – Choose between 9V or 18V operation for increased headroom and enhanced compression characteristics.

• Low-Noise Performance – Designed for studio-quality compression with full frequency response, making it ideal for guitar, bass, and other instruments.

• True Bypass Switching – Preserves signal integrity when disengaged.

Specifications

• Power Requirement: 9V DC center-negative (internal switch for 9V or 18V operation)

• Circuit Type: Analog

• Compression Modes: FET, OTA, Optical

• Controls:

  • Threshold – Adjusts compression sensitivity.

  • Ratio – Sets compression intensity.

  • Attack & Release – Fine-tune response time.

  • Blend – Mix compressed and dry signals.

  • Volume – Controls output level.

• Switches:

  • FET/OTA/Optical – Select compression mode.

• Bypass Type: True Bypass

• Dimensions: 72 x 118 x 50 mm