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Limited to 150 units – Ultra Rare OC81D transistor circuit delivers thick fuzz effects June 23, 2014 — Edmond, OK — Keeley Electronics today announced it is building the Black Glass British Fuzz effect pedal. The pedal will be limited to 150 units. The 100% hand-built Black Glass is a modern compact circuit of the classic OC81 based design and was created for the most demanding fuzz effects lovers. The Black Glass offers a wealth of tone bending vintage musical MkIII sounds with reduced noise and treble response and a modern power supply. With controls for FUZZ, TONE, and LEVEL the Black Glass makes it easy for players to dial in very wild amounts of fuzz. Modifications to the circuit allow for an increased high frequency not heard of before as well as ultra-low noise. Furthermore, design modifications have solved temperature problems that can affect vintage fuzz units. Players have the needed power supply inversion so that they can use a regular 9 Volt power supply. “Our design team focused on building a MkIII style circuit with a stash of OC81D transistors that Robert Keeley had in his rare stock of electronic parts. This type of PNP Germanium pedal can be expensive, bulky, and can have variances in sound quality so our goal was clear: create a best-in-class product that combines compact versatility, repeatable musical tone, and low noise in a compact effect,” said Robert Keeley, founder and chief engineer, Keeley Electronics. “To achieve this, we employed several technical innovations from our Time Machine Boost and Holy Fuzz designs. We also use techniques to nearly eliminate temperature coefficient problems in germanium designs. The end result is that the Black Glass British Fuzz is vintage fuzz effect we are extremely proud of and excited to offer to our customers in this very rare and extremely limited edition and is ready for any stage, no matter how hot!” Like all of Keeley Electronics’ designs, the Black Glass is hand-built in the USA using the finest components and construction techniques. It is housed in a beautifully powder-coated and rugged enclosure, includes true bypass switching, and features a 2-year limited lifetime warranty with world-class Keeley customer support.