Updated 15 May 2026
| Brand | KMA Audio Machines |
| Category | Musical Instruments |
| Available at | 1 UK stores |
| 90-day avg | £159.00 |
KMA Audio Machines
KMA Machines Mandrake Octo-Shrieker Pedal
£168.99Hold
Cheapest at Gear4music · 1 store
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PRICE HISTORY
Current
£156
Change
+1.0%
Avg
£153
Low
£141
High
£159
Volatility
2.5%
PRODUCT DESCRIPTION
- Octave up flair The Mandrake Octo-Shrieker Pedal offers an exceptional upper octave sound making it a must-have for musicians seeking to add a touch of flair to their playing. Whether youre looking for subtle overtones or powerful screaming octaves this pedal delivers with precision and clarity. Its an effect thats formed the sound of many guitar icons but the Mandrake isnt limited to the spiky sharpness of a simple octave up as its ultra-fast tracking and powerful shriek circuit bestows and edgy and fuzzy character to your sound. Its the kind of vintage-character that enthusiasts trawl through second hand stores for - all wrapped up in a modern pedal-board-friendly package. To achieve this KMA included second order Low-Pass Filter timbre and mix controls all on top of the legendary KMA circuit. Filter control The KMA Machines Mandrake Octo-Shrieker Pedal features a Filter control that allows you to fine-tune your upper harmonics for a range of sounds. From piercing shrieks to warmer synth-like textures the Filter control gives you the ability to shape and customize your tone according to your preferences. At full whack youll get a shrieking cacophony that can bring the house down whereas lower settings can introduce gentle synth-like bloom to your notes. Get creative! Timbre control The Timbre control on the Mandrake pedal manages the amount of fuzzy gain in the upper octave giving you full control over how much distortion and edge is added to your sound. Whether you want a subtle hint of fuzz or an all-out sonic assault this control lets you dial in just the right amount to suit your playing style. Mix controls The Mandrake Octo-Shrieker Pedal features separate Mix controls for the dry signal and affected upper octave allowing you to blend the two to your desired level. Whether you want a subtle background effect or a dominant in-your-face tone these mix controls give you complete control over how much of the pedals effect is applied to your sound. Specifications Product Name: KMA Machines Mandrake Octo-Shrieker Pedal Product Code: KMA-MAN-OCT Controls: OCT FILTER TIMBRE MIX DRY MIX EFFECT Power Supply: 9V DC centre negative 2.1mm >30mA max current draw (not included) Current Draw: 25mA Dimensions: 120 x 65 x 55 mm (incl. jacks and knobs)