Full Description
View Full Description
Unusual distortion built on vintage technology
The defining feature of Harvezi Hazze is its unijunction transistor waveshaper. This component behaves very differently to modern silicon designs, responding to signal level in a non linear way. As the input crosses certain thresholds, the waveform begins to fold back on itself, creating complex harmonics and unexpected textures.
By adjusting the Spoil and Spread controls, you decide where this folding starts and how extreme it becomes. Lower settings blend distortion into the clean signal, while higher values push the circuit into more fractured territory that feels alive and reactive.
Multiple stages that shape feel as much as tone
Before the waveshaper even comes into play, the signal passes through an optical compressor with fixed parameters. This helps keep levels controlled and adds a sense of consistency, especially useful when feeding heavy distortion.
Next is a distorting amplifier with two selectable modes. One focuses on smoother saturation, while the other introduces sharper clipping packed with high harmonics. This layered approach means the pedal does not just change frequency content, it also affects how the signal responds to playing dynamics and input level.
Interactive controls for experimental sound design
The front panel controls are designed to interact rather than stay isolated. Spoil and Spread work together to define the waveshaping character, with Spoil also influencing gating and cutoff style effects as you push it.
The main switch adds another dimension. In its right position, total feedback mode links all controls so changes in one area influence the rest of the circuit. This can introduce resonant peaks and self oscillation, making the pedal feel closer to an instrument than a simple effect.
Tone shaping that keeps things usable
After all the distortion and feedback, Harvezi Hazze includes a tone stack aimed at keeping the output manageable. The Tone control adjusts brightness, while side mounted switches expand this further. You can engage or bypass the tone stack, boost bass frequencies, switch the tone behaviour between tilt and low pass, adjust the notch filter frequency, and apply a high cut. There is also the option to remove the compressor from the signal path. These choices help tailor the pedal for different instruments and mixes without losing its distinctive character.
Features
- Versatile distortion pedal offering a wide range of tones from subtle warmth to extreme signal degradation
- Core circuit based on a rare unijunction transistor, delivering unique waveshaping and dynamic behavior
- Multifunctional analog architecture that smoothly transitions between distortion, limiter, waveshaper, and signal generator modes
- Signal path includes an optical compressor, dual-mode amplifier, waveshaper section, and a tone stack for sound sculpting
- Dual-mode amplifier switchable between soft and aggressive clipping with rich harmonic content
- Dedicated controls for shaping distortion character: Spoil adjusts fold point and timbre, Spread sets folding intensity
- Tone control adjusts overall brightness and harmonic presence
- Feedback mode enables interactive knob behavior, resonance effects, and self-oscillation
- True bypass footswitch preserves clean signal when disengaged
- Side-mounted switches add further tonal flexibility: tone stack routing, bass enhancement, tone control mode, filter notch frequency, high cut, and optional compression
- Compatible with guitar, bass, synthesizers, and drums for wide creative application
Specifications
- Input: 1⁄4-inch (6.35 mm) mono jack
- Input Impedance: 750 kOhm
- Output: 1⁄4-inch (6.35 mm) mono jack
- Output Impedance: 100 Ohm
- Power: DC 9V, 50 mA (DC jack 2.1 mm, centre negative)
- Dimensions: 130 x 115 x 40 mm
- Weight: 0.78 kg
- Product Code: HARVEZI HAZZE