The power amplifier 525 top-level power amplifier module, PASCSL digital amplifier board, Danish S- digital amplifier, J-BL amplifier board PRX700 800 series universal power amplifier board, class D power amplifier module, digital power amplifier. Power amplifier and power supply are integrated, with AC 220V, 2 audio inputs and 2 power outputs. Relevant parameters of S- are for reference. Output circuit: umac class d-full band with PWM modulator with ultra low distance. Output voltage: 70Vp/140Vpp Amplification gain: 26dB Signal to noise ratio: 120dB Frequency response: 20Hz-20 kHz Damping factor: 1000(8Qload, 1 kHz and below) Color:As Shown Material:PCB+Metal Package Contents: 1 * Amplifier Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.