SOLVED Pi4 Headphone Audio makes my amp blow on shutdown

[MrNoHolster]

I have a Pi 4 using the 3.5 headphone output connected to an amp. It's fine most of the time but when I boot up or shut down there's a loud POP sound which blows the amp into safe mode, meaning all the lights on the amp flash and I get no sound unless I power it off and back on.

Can you tell me if an HDMI output might fix this if I use a converter such as this? https://thepihut.com/products/hdmi-to-vga-convertor

Thanks!

[LouF]

@mrnoholster I can't answer this with any definitive answer, but I used a particular Bluetooth receiver on a stereo system which fried my amp --- pissed off! I never could speculate the reason since there was no big surge/pop sound; I never used that BT receiver again. A Logitech one has been OK.

I have not had a problem with my RPi being player through (a different) stereo system, but the connections aren't directly connected to the stereo system e.g. RPi (via HDMI w/ RBG adapter) to TV to steteo receiver (via HDMI). Additionally, I've just noticed a fade-in tendency of the audio from the RPi.

Is it clipping or excessive audio level? I don't know, but I imagine the signal is an overload. I would suggest a shutdown order of amplifier first.

[MrNoHolster]

SOLVED!
I bought a cheap micro HDMI to D-Sub adapter that has an audio jack output. This splits the HDMI output from the Pi and works perfectly with no more issues!

[Lolonois]

@mrnoholster Cool. As a courtesy for other users may I ask you to edit your heading of the post and add [Solved] or something similar, thanks.

The audio jack is not grade A at any Pi I own, so I moved to USB-audio, but good to know that HDMI with dedicated audio outlet does also work well.