Sonic Research and MXR Bring the M400 Turbo Tuner to Wider Distribution
The true-strobe pedal combines ±0.02-cent accuracy, a switchable buffer and USB programmability in a compact $149.99 enclosure.
Oct 14, 2026
Credit: Sonic Research (via source)
Sonic Research's M400 Turbo Tuner is shipping as a compact true-strobe pedal developed with MXR, which is handling manufacturing, marketing and distribution. The new enclosure keeps the core Turbo Tuner approach while adding a switchable transparent buffer and multiple output behaviors.
The M400 covers chromatic and guitar/bass modes, programmable alternate tunings and temperaments, USB customization, a sunlight-readable dimmable display and dual power jacks. Sonic Research lists guaranteed accuracy of ±0.02 cents and a $149.99 price.
Credit: YouTube
Why it matters
Turbo Tuner's fast true-strobe display already has a strong specialist reputation; MXR distribution can put that approach in front of many more pedalboard users.
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