Crazy Tube Circuits HI-POWER - Analog Dual Booster/Overdrive

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The HI POWER is Crazy Tube Circuit's latest pedal + amp-in-a-box overdrive recreation! This two-in-one stompbox brings legendary Hiwatt inspired amp tones and colorsound boost tones together, to give you Gilmour type gain!

The boost side, has a silicon transistor circuit and can
deliver from a transparent clean boost to an all-out fuzz drive! CTC set out to clone the original unit featuring the true-to-the-original spec BC184 transistors running on 18V DC (via an
internal voltage booster circuit). The ultra-flexible 2-band Baxandall EQ circuit can add bite and low-end rumble to any setup. While the earlier units didn’t feature a
master volume control CTC chose to include one that is setup in a way so that when it is all the way clockwise it
is bypassed.
Later versions of the Power Boost had 9V power supply and were
renamed as the “Overdriver” due to the lower headroom and their ability to drive the signal earlier. This pedal incorporates this version as well with a flip of a toggle switch (PWR-ODR toggle switch).

The amp side has an all-analog circuit set out to emulate the sound and feel of a Hiwatt amp. From the big bold high-headroom clean sounds to the face-melting crunchy tones. True to the last detail even included the full EQ section along with a presence control located at the negative feedback of the power amp simulation circuit. A headroom toggle switch selects between the high and low headroom options. Similar in operation to the original amps the master volume was designed to produce more gain at higher settings. CTC took the design a step further by adding a switch to select between input channels of the amplifier. You can select between the full response of the normal channel of the amplifier, the increased presence and tight low end of the bright channel input or the “gilmourish” enhanced frequency response

The HI POWER also includes a passive effects loop to give you the option to connect your beloved pedals between your booster/overdrive and amp in a box or use the two sections as
separate and independent effects when using an external bypass switcher/looper. Note that all pedals inserted in the passive effects loop are still in the signal chain when any or both sections of HI POWER are in bypass.
HI POWER features a power-up bypass/engage pre-set function for the footswitches.


  • All-analog dual booster/overdrive – amp in a box.
  • Recreates the tones of the legendary setup used by David Gilmour in the recordings of Pink Floyd’s Wish You Were Here album.
  • Right side: faithful reproduction of Colorsound Power Boost/Overdriver circuits.
  • Left side: 100W and 50W Hiwatt voiced clean/overdrive circuit.
  • Passive series effects loop to connect pedals between the two sections or use them separately as independent effects.
  • Power Supply 9V DC center negative
  • Max current consumption 84mA
  • 5 year warranty



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