Brand: Boss Product Type: Amp Effect Processor Nominal Input Level: Input (-10 dBu) Nominal Return (-10 dBu) Nominal Aux In: -20 dBu Input Impedance: Input: 1 M ohm Return: 100 k ohms Aux In: 47 k ohms Nominal Output Level: Output (-10 dBU/+4 dBU Output Impedance: Output (2 k ohms), Send (2 k ohms) Dynamic Range: 100 dB or greater (IHF-A) Displays: Graphic LCD (132 x 64 dots, backlit LCD) x 2 Connectors: INPUT jack (1/4-inch phone type), AUX IN jack (Stereo miniature phone type), OUTPUT L/MONO, R jacks (1/4-inch phone type), PHONES jack (Stereo 1/4-inch phone type) Other Connectors: EXT LOOP jacks (SEND, RETURN; 1/4-inch phone type), AMP CONTROL jack (1/4-inch phone type), SUB CTL1, 2/SUB EXP jack (1/4-inch TRS phone type), USB port, MIDI connectors (IN, OUT), DC IN jack Power Supply: DC 9V Current Draw: 600 mA Accessories: AC adaptor, USB cap & Owners manual Weight: 4.8 kg Dimensions: 542 mm x 271 mm x 80 mm/21 3/8 x 10 11/16 x 3 3/16 (W x D x H) Disclaimer: Please