In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. Orchestral tuner with multi-temperment function, easily readable meter, wide tuning range and transposing mode. Engineered for precise pitch accuracy, versatile functionality, and with careful attention paid even to the movement of the needle, the OT-12 Orchestral Tuner allows ideal tuning under any conditions, with an incredibly broad tuning spectrum that covers the pitch ranges of all instruments. Add the CM100 microphone as an option!