FEATURES 128 kinds of effect, such as reverb, echo; Robust and compact design; 24/32 bits digital audio processor; MPU control; Variable input /output gain; Digital saturation on LED; Optimized signal path to provide superior sound; Dimension: 483x163 x44MM G.W.:6.80KGS SPECIFICATION Input Jack 1/4 inch TRS and XLR Jack Input Impedance Balance:44kohm;unbalance:22kohm Input range Less than +15db Output Jack 1/4 inch TRS and XLR Jack Output Impedance Balance:150ohm;unbalance:75ohm Frequency response 20HZ-20KHZ +/-0.5db SNR More than 90db THD Less than 0.03% (0db,1KHz) Processor 24bit DSP,48KHz sampling Display Lattice LCD Power Less than 10w Power Supply AC100-120v/200-240v 50Hz/60Hz