STMicroelectronics TDA7491HV Amplifier Case Style: PowerSO Amplifier Class: D Load Impedance: 8ohm No. Of Channels: 2 Operating Temperature Range: 0?‚?°C To +70?‚?°C Output Power: 20W Rohs Compliant: Yes Supply Voltage Range: 5V To 18V Thd + N: 0.1% @ 1W, 8ohm, VCC=18V