Control volume of external amplifier (e.g. wondom)

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  • cyberthom premium
    9. Februar 2020 at 16:27 #48002

    Ist there any way to control the volume of an external amplifier? I am using the raspberry pi with HifiBerry DAC+ Pro. I connected a Wondom JAB3 (TPA250 DSP). I could for instance us an analogue input signal to control the volume of the Wondom amplifier. For that I need to have any chance to get the current volume out of one of the GPIO as an analogue signal.
    Or are there any other implementations, maybe through I2C?
    I searched around, but I could only find the way to control the volume of the raspberry through a rotary encoder or somthing like this. But this would only change the level of the signal coming out of the RSA (Chinch) of the HifiBerry DAC. I would rather like to change the volume directly at the amplifier.

    cyberthom premium
    13. Februar 2020 at 22:31 #48025

    Niemand eine Idee??

    Heiner premium
    23. März 2020 at 14:59 #48215

    Hi cyberthom,

    Sorry about the late reply.

    The Squeezelite players has an option for hardware volume control. Add hw:0 or hw:1 to your command line options, depending on the slot your sound card is in.

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