The Turbo Tuner is a true strobe tuner (not virtual, and not a simulation). The easy to read display instantly shows the slightest change in pitch.
Tunes any note in the scale from C0 (16.35 Hz) to C8 (4,186.0 Hz).
Open Tuning Modes for Stringed Instruments
In open tuning mode, the tuner shows the string number instead of the note letter. There are five modes, each can be customized for any alternate tuning.
The Turbo Tuner is set to the equal temperament by default, but can be programmed for up to 5 different alternate temperaments.
Transpose all notes up to 6 semitones.
The ST-300 Full Size tuner is the same size as a typical MXR pedal. The ST-300 mini is even smaller.
Reference Pitch Adjustment
The A4 reference pitch may be set to any frequency between 300.0 Hz and 599.9 Hz in .1 Hz increments. (Default is 440.0 Hz).
The ST-300 can be powered by a 9 Volt battery or an external 9 Volt DC supply. The ST-300 requires an external 9 Volt supply
No Battery Drain When Off
When switched off, the Turbo Tuner will not drain the battery. You can leave your instrument plugged in.
The Turbo Tuner remembers the settings from the last time it was powered down.
A message is shown on the display when there is about 1 hour of battery life remaining.
The internal time base of each Turbo Tuner is calibrated at the factory to +/- 1ppm (that's .0017 cents) and is guaranteed to maintain an accuracy of +/- .02 cents for the life of the product.