KHDK No. 2 Clean Boost Pedal

No longer available at zZounds
Juice the front end of your tube amp with the No. 2 Clean Boost. The EQ controls help carve out your tone, with the Bass also affecting a second gain stage.

The No. 2 is KHDK's original Clean Boost, utilizing the strength of KHDK's unique circuit. Providing a warm, tube-like boost, it was designed for those who appreciate a natural and subtle gain. All our pedals are proudly made and quality-tested in the USA.

Best used as a tool for shaping your tone on a quality all-tube amp, the No. 2 allows the organic and transparent EQ controls to fully develop your tone.


1. Gain Controls the unity gain of the circuit.
2. Volume Controls the overall output volume of the No. 2.
3. The hi/lo switch Is tied directly into the gain. The lo setting offers a warm, tube-like boost. The hi setting adds saturation, compression and a powerful mid boost.
4. Bass Controls the bass and lower mid-frequency gain. The bass is tied into the gain, making it a secondary gain control enhancing lows. For boosting an overdriven tube amp, it is recommended to lower the Bass control setting for a tighter bass response. For single note soloing, turn the Bass control clockwise.
5. Treble Control Is a passive low-pass filter, cutting high end and offering a wide frequency range. The setting depends on your amplifier; we recommend cutting the treble on brighter amps to achieve a warm tone.
6. Footswitch Engages your No. 2 to "on" or True bypass mode.

Powered by Battery or 9V DC Power Supply

The KHDK No. 2 Clean Boost is powered by a single 9V battery. You can access the battery connection by unscrewing the bottom plate of the pedal read more enclosure. Alternatively, plug in an external 9V DC (center negative) power supply. read less

- Bypass mode: True Bypass
- Dimensions (Width x Depth x Height): 120mm x 65mm x 40mm deep
- Input Connector Type: Standard 1/4" jack - mono/TS
- Output Connector Type: Standard 1/4" jack - mono/TS
- Power Input: Standard 9V Battery or 9V DC (center negative) power supply.