Andoer NUX MFX-10 Modeling with Multi-function 55 Effect 72 Preset Processor Guitar Effect Pedal Drum Recorder 55 types of effect, up to 8 types can be used simultaneously. 19 classic amp and pedal models with A/B channel switching. Vintage 3-band passive EQ for every amp model. Parametric EQ with extra middle frequency sweep control for pedals. 12 cabinet models provide two different modes for guitar amplifier or mixer/PA input. Built-in drum machine with CD quality PCM sounds. Up to 20 seconds phrase loop with sound on sound. The AUX IN jack makes it easy to practice along with MP3, CDs and other inputs. The expression pedal lets you adjust the volume or effects parameters in real time. Big backlit 160 * 128 TFT LCD for clear, easy viewing of the device's name, parameters, tuner display etc. A total of 72 presets: 36 factory + 36 user presets. The A/B switch allows you to use up to 144 presets 32-bit DSP, high performance 24 Bit/ 48kHz AD/DA convertors. TS/AC (True Simulation of Analog Circuits) Technology duplicates the distortion and tone shape of tube and vintage effect Powered by 9V DC 500mA adapter (Negative pin).