[RPi5] HiFiBerry Amp4

    • New

    Hi there,

    I've downloaded and installed LibreElec 12 onto my RPi 5 with HifiBerry Amp4 HAT. I previously had this running fine on an RPi 4.

    I've followed the instructions on overlays from the LibreElec wiki which should enable the HAT. This should present an option for the HAT in System Audio settings, but for me, does not,

    I've also verified the hardware is working by installing Moode Audio and running the audio out of the Amp4 HAT.

    Any help much appreciated!

    • New
    Quote from HiFiBerry Amp4

    You only need a single 12-24V power supply to power the Raspberry Pi and the Amp4. With 4 Ohm speakers, we recommend 12-20V. Higher operating voltages are only recommended with 8 Ohm speakers.

    What's the power supply of your RPi / HiFiBerry system? Maybe you don't get enough wattage for A/V.

    • New

    In case helpful, I edited /flash/config.txt and added the line dtoverlay=hifiberry-amp

    For good measure, I also added dtoverlay=hifiberry-dac and dtoverlay=hifiberry-amp4

    The Hifiberry-dac file did appear in System » Audio, but selecting it does not appear to produce audio output, although the advice from Hifiberry is that Hifiberry DAC drivers usually work for their Amp.

    • New
    Quote from JimKillock

    In case helpful, I edited /flash/config.txt and added the line dtoverlay=hifiberry-amp

    For good measure, I also added dtoverlay=hifiberry-dac and dtoverlay=hifiberry-amp4

    The Hifiberry-dac file did appear in System » Audio, but selecting it does not appear to produce audio output, although the advice from Hifiberry is that Hifiberry DAC drivers usually work for their Amp.

    Only use the first line, and answer my question. Background: RPi5 needs more wattage, compared to RPi4.

    • New

    NB: Apologies for the lack of synchronisation in posts Da Flex , I posted before I had read your query about wattage. Regarding wattage, the power supply for these units comes through the HAT and powers the RPi through the HAT; I had tested the hardware was working before posting by installing and running Moode Audio.

    • New

    As your RPi is supplied with power via the HAT, you may encounter another problem. You are bypassing the negotiation via the Power Delivery protocol. So I assume the RPi5 is limited to 3000mA by default. Please see my comment from here:

    Post

    RE: [RPi5] HiFiBerry Amp4 Pro

    @LieberBieber  

    because the RPi5 is powered from the backside via GPIO, maybe with the Amp4 Pro you are now in the same situation like the Argon ONE V3 users and needs to tell the RPi5 that the used power supply is strong enough. Especially if you have attached additional USB devices.

    Try to get it stable with these configuration changes:

    Add these lines to bootloader config/EEPROM:
    PSU_MAX_CURRENT=5000

    and to your config.txt:
    usb_max_current_enable=1

    Regarding documentation here is a (maybe…
    HarryH
    June 23, 2024 at 12:23 PM