I almost hesitate to post this but...
Playing my new 3-way crossover setup (https://www.hifiwigwam.com/threads/diy-3-way-analogue-crossover-with-gainclone-amps.117232/) this morning, I noticed that when changing tracks, there was noticeable "hash" overlayed on the beginning of the new track for a second or two. With the rather Heath-Robinson setup I have at the moment, the R-Pi4 streamer was sitting very close to the heatsink for the chipamps on one channel, so I moved it as far away from the two crossover/amp boards as the cable would allow. Noise very much attenuated/eliminated. Bringing the Pi4 box as close as I could get it to the power amp circuitry on the component side of the board, noise very much louder and not confined just to changing tracks.
Just goes to show that in some types of equipment, siting of the Pi relative to other bits can make a big difference.
Playing my new 3-way crossover setup (https://www.hifiwigwam.com/threads/diy-3-way-analogue-crossover-with-gainclone-amps.117232/) this morning, I noticed that when changing tracks, there was noticeable "hash" overlayed on the beginning of the new track for a second or two. With the rather Heath-Robinson setup I have at the moment, the R-Pi4 streamer was sitting very close to the heatsink for the chipamps on one channel, so I moved it as far away from the two crossover/amp boards as the cable would allow. Noise very much attenuated/eliminated. Bringing the Pi4 box as close as I could get it to the power amp circuitry on the component side of the board, noise very much louder and not confined just to changing tracks.
Just goes to show that in some types of equipment, siting of the Pi relative to other bits can make a big difference.