Dsp board for class D amplifier

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DSPOWER-2040-CRV4C
Can it be controlled with 485 PC?
Can I input and output analog signals?
How much is it?
Can you buy it in China?
Thank you

There is no serial communication. It is for stand alone application.
Yes, you can input analog ou digital audio (s/pdif). This module output analog audio and PWM modulation.

I paid U$ 48.00.

Can you buy it in Brazil only. (not chinese product)
 
This is dirtier than Chinese. The gain of an open-loop PWM amplifier changes with supply voltage sag. The transition from discontinuous inductor current (DCM) to continuous inductor current (CCM) is a source of low volume distortion. The whole idea of tri-level open-loop PWM amplification is aimed to 10% THD.

edit: And yet, it is way to go for AC power inverters.
 
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