Maximum output:  		-- 20W+20W (8ohms) fixed bias
output tube:   		-- 300B A class parrale single -ended 
output:   		impedance 4 / 8 / 16ohm 
Frequency response  	5Hz- 60 kHz (+1,-1dB)
Total distortion  		< 0.1%(1kHz)@
SN level   		95dB@
Input sencitivity  	0.5V
Tubes    			300B * 2 , 6SN7 * 2 ,12AT7 * 1
Input    			terminals, ,unballance 4
Power sanction   		250watts 
Demention:  		430Wx210Hx 320Dmm 
Weight:   		20kg