The HOOK Drum & Loop (NDL-3) is a mini looper pedal with auto tempo detection. Simply record a phrase loop, then add a synchronized drum beat. Or you can use the included Smart Tap Tempo and play the drum beat, then start to record the phrase loop. The HOOK is intelligent and simple to operate. When recording your phrase loop, you can choose Normal Recording or Auto Recording. Normal Recording (NR) is like regular looper pedal, while you press the footswitch, it starts to record immediately. When in Auto Recording (AR) mode, press the footswitch to record arm the looper. HOOK will start recording once it detects your guitar signal. This is convenient while you put the HOOK on the desk, and you can use your hand instead of your foot to operate it. Note: To switch between NR/AR, hold the footswitch while plugging in the AC adapter to bootup the pedal. NR: Drum Tap indicator flashes BLUE 3 times. AR: Drum Tap indicator flashes RED 3 times. Even without the phrase loop, the HOOK can be used as a drum beat with Smart Tap Tempo. It offers 11 drum beat styles with high quality sound samples, and useful rhythms for practice. When in Auto Recording (AR) mode, press the footswitch to record arm the looper. HOOK will start recording once it detects your guitar signal. This is convenient while you put the HOOK on the desk, and you can use your hand instead of your foot to operate it. Note: To switch between NR/AR, hold the footswitch while plugging in the AC adapter to bootup the pedal. NR: Drum Tap indicator flashes BLUE 3 times. AR: Drum Tap indicator flashes RED 3 times. Even without the phrase loop, the HOOK can be used as a drum beat with Smart Tap Tempo. It offers 11 drum beat styles with high quality sound samples, and useful rhythms for practice.