Master your own music style 6-band graphic EQ designed specifically for electric guitar(120Hz,250Hz,750Hz,1.6kHz,3.2kHz,6.4kHz) A total of 58 effects ; up to 8 can be used simultaneously Up to 40 seconds phrase loop with sound on sound adds more playability Built-in drum machine with CD quality PCM sounds Large color TFT LCD panel (160 x128),graphic interface making the overall operation easy and intuitive 13 classic amp models with True Simulation of Analog Circuit(TSAC) A total of 72 presets, 36 factory and 36 user presets. Vintage 3-band passive EQ modeling for every amp model 11 cabinet models.Seamless and quick preset switching 32-bit DSP, high performance 24Bit 44.1kHz AD/DA converter Powered by batteries or DC power adapter 6*AA alkaline batteries all up to 8 hours of continuous use The transmission distance is about 30 meters Used in electric guitars,bass and acoustic products Specifications Display: 160 * 128 QVGA TFT LCD Jacks: INPUT, OUTPUT, AUX IN, DC IN Input: -20dbv 1Mohm Output: -10dbv (output load impedance of 10k or more) Adapter input: 230V-50Hz 100mA Adapter output: 9V-500mA 4.5VA Headphones: 20mW+20mW (into 32Ω load) AD/DA converter: 24-bit Power: 9V DC, 300mA, ACD-007A (pin negative) Dimensions: 22.5 * 15.5 * 5 cm/8.9 x 6.1 x 2 inches Product weight: 697 g / 24.5 oz/1.54 lb Package Included 1 x MG-100 Multi-Effects Processor(without battery)