Item: XH-M190 Name: Digital Audio Amplifier Model: XH-M190 The number of chips: dual-core chips Chip Name: TPA3116D2 Input power: DC12V-24V Output power: 100Wx2 Input Impedance: 51Kx2 Power efficiency:> 90% Output resistance: 4-8Ohm Frequency range: 14-100KHz Noise ratio: 100db Output channel: left and right dual channel Size: 105 * 65 * 23MM Net weight: 90g