Yamaha

Scale Tuner allows you to change the tuning of a compatible Yamaha keyboard or digital piano to Arabic or pure temperament tuning. Compatible Models: - Clavinova: CVP-501/503/505/509, CGP-1000 - Arranger Workstation: PSR-S650/S710/S910, Tyros4 Scale Tuner is only available in the countries where Apple Inc. offers Apple Store.