Sundtek and TVheadend: sounds like old VHS

  • I received my Sundtek MediaTV Digital Home (DVB-C/T/T2) today, and set up TVHeadend backend and frontend.
    All channels are synced fine, and playback is happening.
    I'm using Analogue TV through my cable company.

    One thing I am noticing is that the sound sounds like from an old VHS going bad.
    During talking it's not a problem, but with music you can hear the sound not going smoothly.

    Maybe a made a slight mistake with the device.
    There is also the Sundtek MediaTV Pro (DVB-C/T/T2, FM-Radio, AnalogTV).
    Not 100% sure what AnalogTV is here, DVB-C is working for me, so maybe it's nothing to worry about in my case.

    Anyway, could I be missing something that can fix this VHS sound quality?