Common Speaker: 1x4” full range Output power: 15W (DC IN powered) or 7.5W (battery powered) Power supply Power: battery power (6xAA - included), or DC power supply (9V-15V DC, from 1500mA up, negative inside - not included) Battery duration: approx. 15h with 6xAA alakline DC IN: 9V-15V DC negative inside USB Interface Conversion: 24-bit A/D, 24-bit D/A Sampling Rate: 44.1 kHz, 48 kHz, 88.2 kHz and 96 kHz Device Connection: micro-USB Instrument Input Connector: unbalanced, Hi-Z, TS 1/4” Jack. Tip: signal / Shield: ground Instrument Input Level: from 30mVpp to 6.9Vpp Instrument Input Impedance: 1MOhms Frequency response: 20 Hz – 20kHz +/-1.5dB Stereo Headphone Output Connector: 1/8” TRS Jack. Tip: right / Ring: left / Shield: ground External Speaker Output Connector: 1/4” TS Jack Load impedance: from 4 to 16 Ohms Dimensions and weight Dimensions: 210mm x 125mm x 155mm Weight: 1.26kg Package includes iRig Micro Amp Lightning to micro-USB cable 60cm USB A to micro-USB cable 60 cm 6 x 1.5V AA battery 3/8"-16 male to 5/8"-27 female mic stand thread adapter