Crazy Tube Circuits Hi-Power Pedal in very good condition, velcro-free, and comes with original box & papers.

The Hi Power by Crazy Tube Circuits combines a faithful recreation of the Colorsound Power Boost with a Hiwatt-inspired amp simulation, delivering dynamic gain staging and authentic British amp tones. With independent footswitches, flexible EQ controls, and a passive effects loop, Hi Power offers everything from transparent boost to full-stack saturation.

Key Features

• Colorsound Power Boost Recreation – True-to-original BC184 transistor circuit, running at 18V DC via an internal voltage booster.
• Master Volume Control – Allows better control over output level.
• Reverse-Log Gain Control – Provides a smoother transition from clean to mean compared to the original linear taper.
• Overdriver Mode – A toggle switch engages the higher-gain, lower-headroom version of the original boost circuit.
• Hiwatt Amp Simulation – Emulates the bold, high-headroom clean tones and crunchy drive of classic British amps.
• Full Amp-Style EQ – Includes Bass, Treble, Presence, and Master Volume.
• Selectable Input Channels – Choose between Normal, Bright, or Linked modes for varied tonal shaping.
• Headroom Toggle – Switch between 100W high-headroom power section (quad EL34s) or 50W lower-headroom compression (dual EL34s).
• Passive Effects Loop – Allows integration of external pedals between the boost and amp sections, or independent use of each section via a bypass switcher.
• Power-Up Preset Function – Lets users set the default state of the pedal when powered on, useful for remote pedal switchers.

Specifications

• Power Requirement: 9V DC center-negative
• Circuit Type: Analog
• Boost Section: Colorsound Power Boost / Overdriver
• Amp Section: Hiwatt-style preamp with full EQ
• Controls:
• Volume & Gain – Adjust output level and saturation.
• Bass, Treble, Presence – Shape frequency response.
• Input Channel Select – Choose Normal, Bright, or Linked.
• Headroom Toggle – Switch between 100W and 50W power section voicings.
• Bypass Type: True Bypass
• Dimensions: 147 x 103 x 65 mm