Graphics, sound and multimedia • Using original digital piano speakers with Pi setup

I'm in the process of implementing a Raspberry Pi into my (sadly broken) digital piano - in short, one of the original boards failed and I figured this'd be an interesting project. Thus far I have the key presses registering and triggering the correct MIDI codes and the pedal presses are working too, audio is then played through FluidSynth (for now). All in all good progress!

But the audio is proving difficult. The piano originally had two front-facing speakers at 8 Ohms and 70w and two downward-facing speakers at 6 Ohms and 40w. Each speaker was originally connected via a 2-pin connector. I'd like to continue using these (at the moment, I just output audio to two bookcase speakers via the Pi's standard audio jack).

I am a bit baffled as to where to go from here. Originally, I had thought about the HiFi Berry Amp4 as that, to quote the webpage, "is designed to work with all speakers or 4-8 Ohm impedance. It supports sample rates from 44.1-192kHz (16-32bit)." and also supplies power to the Pi. I don't know if this'd work with my (4?) channel requirement.

So, my question: can anyone help? Audio isn't my 'thing' so I'm a little confused as to where I even start! Thanks!

Statistics: Posted by ConnorSA1993 — Sun Jul 27, 2025 10:48 am

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