DRUM SHOP
ORCHESTRAL INSTRUMENTS
Pro Audio & recording
M00012335
EQD Sunn O))) HalfLife Octave Distortion + Booster Pedal
$479.00
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HalfLife is a distortion with a blendable analog octave up and a booster combined in one compact package. The “Amplitude” side is faithfully modelled after the classic “White Face” distortion unit. The only modifications made to the original circuit are in the clipping section. The traditional circuit uses a single pair of silicon diodes for a tight, compressed crunch. HalfLife introduces two additional clipping options to better adapt to different rigs. The first position is no diodes to allow for a full, grinding Op Amp assault at maximum volume. The second position utilizes two silicon diodes and one LED in an asymmetrical clipping configuration. This delivers a slightly compressed and smooth crunch, similar to a valve amplifier. The last position is the stock double silicon diode configuration, which provides that classic tone you know and love.
The Octave in HalfLife is an all-discrete analog full-wave rectifier circuit. Located at the input of the circuit, the Octave control slowly blends in the octave effects as you turn it clockwise. This feature can also be used via expression control, allowing for wild, hands-free octave swells mid-riff. Because this is an analog octave effect, it is monophonic and works best playing single notes above the twelfth fret while using the neck pickup. Playing chords with the analog octave will sound clanging and chaotic. Using the bridge pickup and playing below the twelfth fret will produce a very subtle octave effect. Going full Octave transforms HalfLife from a simple distortion device into a swelling, raging fuzz similar to the classic Super Fuzz!
The “Magnitude” section of HalfLife is a simple all-discrete MOSFET booster designed to blast your preamp tubes and drive them wild. It is a 100% clean, no-nonsense, high impedance booster that adds very little color to your tone. It does not add distortion on its own but has plenty of output to push your amp into saturation.
The signal path is Octave > Distortion > Boost. The octave distortion and booster can be used independently with their own respective footswitches. The right footswitch is the octave distortion, and the left footswitch is the booster.
Features
- Octave (O): This blends in the analog octave as you turn it clockwise.
- Filter (F): This is a low pass filter with a frequency response from around 500 Hz to 30 kHz. Turn counterclockwise for more high-end, clockwise for less.
- Distortion (D): Turn clockwise for more distortion, counterclockwise for less. This provides about +60dB of gain.
- Magnitude (MAG): This is the output volume for the booster. Clockwise to blow up your amp, counterclockwise if you’re a baby. Unity is somewhere right around noon on the dial.
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Clipping Switch (CLIP):
- OpAmp: No diodes to allow for full, grinding Op Amp assault at maximum volume.
- Asymm: Utilizes two silicon diodes and one LED in an asymmetrical clipping configuration. This delivers a slightly compressed and smooth crunch, similar to a valve amplifier.
- Symm: This is the stock double silicon diode configuration, which provides that classic tone you know and love.
- Amplitude (AMP): Output volume for the octave distortion side. Clockwise for more hearing loss, counterclockwise for a healthy life in old age.
- Magnitude Footswitch: Boost Activator
- Amplitude Footswitch: Octave Distortion Activator
- Octave EXP Jack: Connect any expression pedal to this input to control the analog octave blend.
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