TU-3: How to Change the Reference Pitch

The TU-3 allows you to adjust the reference pitch over a range of 436–445 Hz. The factory default is 440 Hz.

1. Press the MODE button and STREAM/CENT button simultaneously.
   The lowest digit of the current reference pitch (e.g., "0" when set to 440 Hz) will flash in the Note Name/String indicator.

2. Press the MODE button or STREAM/CENT button to change the reference pitch.
   Note: If several seconds elapse without pressing either button, the TU-3 will return to normal operation.

   • MODE button: Raises the reference pitch by 1 Hz.
   • STREAM/CENT button: Lowers the reference pitch by 1 Hz.

   Display	Reference Pitch
   6	436
   7	437
   8	438
   9	439
   0	440
   1	441
   2	442
   3	443
   4	444
   5	445

   This setting remains stored even after the power is turned off.