October 2026 Issue
GuitarsOnline Reading Access

MATT MCCULLOCH TAKES THE POWER RIDE

Impossible To Unhear

By Matt McCulloch · Vol. 27, No. 12 · October 2026

Matt McCulloch approached John Grammatico’s power cables with the ears of a longtime player and a healthy dose of skepticism. His experience with amps mirrored Riverhorse’s, but the real question was what could happen at the pedalboard. Drawing on years of listening to high-end audio and familiar guitar rigs, Matt puts the cables where subtle changes are easy to recognize. What he hears in clarity, dimension, dynamics and the way individual pedals reveal themselves turns an unlikely piece of the signal chain into something impossible to ignore.

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Impossible To Unhear — The ToneQuest Report®