Hotone RAVO is a multi-effects processor and USB audio interface. This tiny, light-weight pedal has all the functions you need - 130 effects in 8 useful modules, 100 amazing presets, a built-in drum machine with 100 patterns, 30 seconds of recordable looping, and a high quality USB audio interface. Plus, it comes with a free, user-friendly software - RAVO Tonebank - for editing and sharing your own tone. Ravo will be your best live performance and recording tool. Features: 8 Effect Modules · 130 Effect Types · 100 Preset Patches · 44.1kHz sampling, 24-bit A/D/A Conversion · 32-bit DSP Processor Onboard · Assignable Expression Pedal · Free RAVO Tonebank software available for editing and sharing tones · Built-in drum machine with 100 patterns · 30 seconds recordable looper · Precise Tuning function · Patch Pre-Select Recall function · Bright, easy-to-check display · Compact operation interface · AAA battery (x4) power supply and USB bus power supply available.