... ,protection circuit is very complete 3.High-end switch amplifier. T-38 pro amplifier specifications: Specifications Impedance T18 T20 T22 T24 ... ,±0,2 dB/8 Hz-50kHz,+0,-3 dB 14 kΩ balancedselectable:26 dB,32dB,or 1,4 V input sensitivityincrush ... ,01%>4009,4 kg/20,7 lbs11kg/24,3 lbs483×88.9×340mm/19×3.5×13.4 inches(19,2U ... ,04m3)/21.3×5.3×21.3 inches pro amplifier (T-38)