For the benefit of others I solved my noisy Pi audio output using a cheap (£5) Ground Loop Isolator from eBay.
It connects between the Pi audio jack and my amplifier.See photo attached.
I can now crank up the volume and warn all my neighbours that my "Coolant temperature is high" without hiss and crackling the audio.
Bye the way - yes I do plan to tidy up the cabling.
It connects between the Pi audio jack and my amplifier.See photo attached.
I can now crank up the volume and warn all my neighbours that my "Coolant temperature is high" without hiss and crackling the audio.
Bye the way - yes I do plan to tidy up the cabling.