The KMA Machines MANDRAKE Octo-Shrieker is designed to be the most flexible analog upper-octave pedal ever built. Based on the refined Shriek circuit from the MOAI MAEA, MANDRAKE delivers an even more powerful, present, and versatile octave-up experience. From subtle tone enhancement to crushing dual-octave fuzz, this pedal brings elevated tonal euphoria to any rig.

With its discrete transistor-based fuzz, 2nd-order pre-gain filter section, and intuitive TIMBRE and FILTER controls, MANDRAKE offers a huge range of octave tones, from edgy shrieks to smooth synth-like blooms. Independent dry and octave mix controls allow you to dial in everything from subtle textures to full-on doom-laden saturation. Handmade in Berlin, this compact, pedalboard-friendly beast makes octave-up effects not only more versatile, but more controllable than ever.

Main Features

• Analog Upper Octave Pedal – from subtle enhancements to dual-octave fuzz
• Ultra-Fast Tracking – precise performance for any instrument
• Discrete Transistor Fuzz – enhanced rectification circuit for a robust octave
• Active Pre-Gain Filter Section – optimises signal for superior octaval tones
• FILTER Control – tame upper harmonics or bloom into synth-like textures
• TIMBRE Control – adjust fuzz gain for tones from crunchy to saturated
• Independent DRY & OCT+ Mix Controls – precise tonal balancing
• Compact Enclosure – top-mounted jacks for easy pedalboard integration
• Silent Relay-Based Switching – true bypass with soft switching
• Handmade in Berlin, Germany
• Power: 9V DC (centre -, 2.1mm, >30mA)

Sound & Performance

Octave-up pedals have shaped iconic tones for legends like Hendrix, Iommi, Josh Homme, Billy Corgan, and Jack White. MANDRAKE expands on that tradition with a versatile circuit that avoids clashing overtones and adapts seamlessly to different instruments and pickups.

• FILTER: Cuts or blooms harmonics for aggressive shrieks or smooth textures
• TIMBRE: Dial in gain character from subtle crunch to doom-metal saturation
• Mix Controls: Blend dry and octave signals for clarity, punch, or chaos

Whether you want shimmering melodic overlays, cutting octave leads, or massive fuzz-driven walls of sound, MANDRAKE lets you choose between subtle descant or full octaval Armageddon.

Specifications

• Type: Analog Upper Octave Pedal
• Controls: TIMBRE, FILTER, DRY, OCT+ mix
• Circuit: Discrete transistor fuzz with enhanced rectification
• Bypass: Silent relay-based true bypass
• Enclosure: Compact with top-mounted jacks
• Power: 9V DC PSU (centre -, 2.1mm, >30mA, not included)
• Build: Handmade in Berlin, Germany

The KMA Machines MANDRAKE – unleash screaming upper-octave tones, from subtle enhancements to devastating fuzz. A versatile octave-up pedal for guitarists seeking total control.

Outside the UK?

Please note that shipping costs outside the UK are very approximate and can vary radically. Please contact us with your Country and Post/Zip Code for an accurate quote. Many thanks. Please also note if you are outside the UK we will not charge you tax on your purchase but you may be liable for import duty in your country.

Please also note that all our stock is sold for the UK market. If you are buying from outside the UK, please check that it is suitable for use in your country before purchase.