Andy Timmons and Robert Keeley join forces once more on the Super AT Mod Overdrive – the “ultimate expression” of the virtuoso’s broken-up clean tone

Keeley Super AT Mod Overdrive Andy Timmons signature pedal
(Image credit: Keeley Electronics)

Andy Timmons and pedal modding maestro Robert Keeley captured hearts and minds with the impressive Halo Dual Echo last year. Now they’ve teamed up for a second project, the Super AT Mod – an overdrive pedal which in some ways dates back to the beginning of their working relationship.

As Timmons notes in the video clip, the pedal that first caught his attention was a Boss Blues Driver BD-2 that had received Keeley’s signature Phat Mod. Timmons has put that unit to good use for years now, using it to get the “mid-gain to clean” range crucial to his responsive guitar and finger tone. 

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Matt Parker
Features Editor,

Matt is Features Editor for Before that he spent 10 years as a freelance music journalist, interviewing artists for the likes of Total Guitar, Guitarist, Guitar World, MusicRadar,, DJ Mag and Electronic Sound. In 2020, he launched, which aims to share the ideas that make creative lifestyles more sustainable. He plays guitar, but should not be allowed near your delay pedals.