The TU-3 offers improved detection accuracy over the TU-2 (±-1.0 cent vs. ±3.0 cents), a higher-resolution display, high-brightness mode, and additional transposition and calibration options. Form, materials and build quality are exactly the same.
Browsing: high-brightness mode
Made by Boss
The compact Boss TU-3s offers the same specs (and some of the same functionality) as the full-sized TU-3 in a compact, always-on version, but the lack of mute functionality may be a deal-killer for some.