... connected by speciall four-core line ModelPA1202PA1502Rated Output Power Continuous Average Power RMS,1KHz,THD≤1%4CH@ 4ΩLOW( ... 47 0CircuitryBipolar,ClassABInput Impedance20kΩ balancedSlew Rate40V/μs45V/μsVoltage Gainrated power @8ΩLOW(CH2,CH4):35.5dBHIGH(CH1,CH3): ... inrush-current limitation,temperature monitoring of heat-sinks and transformer,output short protection,output DC protection,output over ...