Specification: Input voltage: DC14- 32 v Output power: 100W* 2 Output resistance: 4-8ohm Line type: D typeChip: TDA7498 Harmonic distortion: Po= 1W/ 0.05% Frequency response range: 18-100KHZ Switching frequency: 360KHz Signal to noise ratio: 110dbSize: 96* 64* 25mmFeatures: Output power: 100w+ 100w( VCC+ 32V, RL= 4ohm, THD= 10%Width: 14- 30v signal power supply. 4 levels of gain are optional: (21.6dB, 27.6dB, 31.1dB, 33.1dB). Use differential inputs to significantly reduce common mode noise. With failure mode and silent mode. With intelligent protection function and overheating protection function. The package includes:1* TDA7498 high power digital power amplifier board 2* 100w car power amplifier DC 14 - 34 v