The MXR M400 Turbo Tuner Pedal delivers fast, precise tuning using the core engine of the original Sonic Research Turbo Tuner. Accurate to ±0.02 cents, its true strobe display responds instantly to changes in pitch, while four brightness settings keep it easy to read in different lighting conditions.
Chromatic mode handles all twelve notes, and five customizable presets accommodate alternate tunings and instruments with up to 12 strings. Switchable true or buffered bypass lets you choose how the tuner operates within your pedalboard, including silent tuning and always-on monitoring. A USB-C connection supports firmware updates and editor software, while a 9V DC passthrough output supplies power to an additional compatible pedal.
Specs:
True Strobe Tuning with Sonic Research Technology
±0.02-Cent Accuracy
C0–C8 Tuning Range
Four Display Brightness Levels
Chromatic Mode & Five Customizable Presets
Supports Up to 12 Strings Per Preset
Custom Tuning Offsets: ±50 Cents in 0.1-Cent Increments
Flat Tuning Up to Nine Semitones
Adjustable A4 Reference: 300–599.9Hz
Switchable True or Buffered Bypass
Three Buffered Operating Modes
USB-C Connection
¼” Input & Output
9V DC Power or 9V Battery Operation
9V DC Power Passthrough Output
The MXR M400 Turbo Tuner Pedal delivers fast, precise tuning using the core engine of the original Sonic Research Turbo Tuner. Accurate to ±0.02 cents, its true strobe display responds instantly to changes in pitch, while four brightness settings keep it easy to read in different lighting conditions.
Chromatic mode handles all twelve notes, and five customizable presets accommodate alternate tunings and instruments with up to 12 strings. Switchable true or buffered bypass lets you choose how the tuner operates within your pedalboard, including silent tuning and always-on monitoring. A USB-C connection supports firmware updates and editor software, while a 9V DC passthrough output supplies power to an additional compatible pedal.
Specs:
True Strobe Tuning with Sonic Research Technology
±0.02-Cent Accuracy
C0–C8 Tuning Range
Four Display Brightness Levels
Chromatic Mode & Five Customizable Presets
Supports Up to 12 Strings Per Preset
Custom Tuning Offsets: ±50 Cents in 0.1-Cent Increments
Flat Tuning Up to Nine Semitones
Adjustable A4 Reference: 300–599.9Hz
Switchable True or Buffered Bypass
Three Buffered Operating Modes
USB-C Connection
¼” Input & Output
9V DC Power or 9V Battery Operation
9V DC Power Passthrough Output
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