POWER OUTPUT:2x30W (8Ω) FREQUENCY RESPONSE: 20Hz~30kHz ±1db THD:< 0.1%(1kHz) INPUT SENSITIVITY: 500mV INPUT IMPEDANCE:100KΩ S/N RATIO:89dB DIMENSION(WIDTHxHEIGHTxDEPTH):430x180x345mm WEIGHT:24Kg TUBE:6H8Cx4, EL34Bx4, 5Z3Px2