1:1 reproduction Threshold SA3 amplifier Class A 50W*2 HIFI,Sinbosen 2 ohm stable 3600 watts 2CH class d digital high,Shinybow SB-3702RCA 1 x 9 Composite Video Distributi SB-3702RCA,1:1 reproduction Threshold SA3 amplifier Class A 50W*2 HIFI,Sanyo JA-667 Stereo Amplifier / EQ-667 Equalizer _____ sn