FX FX502A 50W x 2 Hi-Fi 2-Channel Digital Power Amplifier - Silver + Black (100~240V)
Power: 50W 4ohm 25W 8ohm; Efficiency: 81% at 50W,4ohm 88% at 25W,8ohm; Dynamic range: 100dB; Color: Black; Material: Aluminum; Casing process: Pull lines; Oxidation; Screen printing technology: radium vulture; Signal input: RCA signal input. Signal output: 4-line signal output. Power supply: DC 12-25V 50W above external diameter is 5.5mm negative. Inner diameter is 2.1mm positive. Circuit board: 1.6mm thickness. Full glass fiber.