GEP Distribution is the exclusive U.S. distributor for Roger Mayer guitar pedals and Yankee power supplies.

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Since 1964 ROGER MAYER has been crafting icons of tone that have changed the sound of Rock and Studio Recording. When Rock & Blues luminaries Page and Hendrix needed new tones they called Roger. Recording Studio Electronic Designs quickly followed with many leading studios using RM Studio products such as the legendary RM 58 Limiter RM 68 Noise Gates and in 2000 Roger was nominated for a Technical Grammy for his Studio and Rock work for the music industry.

Our latest Analogue Dynamic Processing Devices the 456HD® and the Brand New 615 smooth continue our forward thinking by pioneering ultra high speed advanced analogue processing to be used both in live performance and studio recording. Whatever your application- Rock, Blues, Jazz, Country, Folk, Classical, Funk or Metal there will be a unique product to enhance and bring your tone vision to life both in performance and recording situations.


Yankee manufactures power supplies for guitar effects since 1999. Experience, continuous improvement of the technological process and using of the finest electronic components ensures that our power supplies are the highest quality products. We believe that they meet the current demands of your effects by ensuring their reliability and great sound (without unnecessary noise, humming, etc.)

Our desing and workshop facilities are located in Poznan, Poland. Here we develop and improve our products. Marketing and sales department are in Lublin, from where we send power supplies to the customers in Poland and abroad. We are proud of the growing cooperation with distributors in Europe, USA and even in Australia.


Roger Mayer

Yankee Power

Your Distribution Source For Roger Mayer Pedals &
Yankee Power Supplies

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Office Location

2616 Grandview Ave 2nd Floor
Nashville, TN 37211

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+ 1-570-223-8303