D'Addario Micro Tuner Electric Amp there are two internal trim

there are two internal trim pots that offer user-adjustable width and rate control of the modulation for even more tonal options

Battery connection and 9v power jack

the Premium Guitar Care Kit provides everything needed for proper care in one convenient package

the Humidipak adds or removes moisture as needed

also accepts optional  9VDC power supply

D'Addario Micro Tuner Electric Amp there are two internal trimThe DAddario Micro Tuner is a compact, ultra discreet tuner designed to mount directly on your instruments headstock without getting in the way. Its low profile design allows it to sit behind the headstock, keeping it nearly invisible to your audience while still providing quick, easy access for tuning. Using a sensitive piezo transducer, the tuner detects vibrations directly from the instrument, delivering fast and accurate tuning even in noisy