As a self proclaimed Raspberry Pi fan boy I’ll just say that the Pi400 is radical. A wonderful hark back to the all in one computers like my ZX Specktrum, Atari 400 etc. Very easy to setup and it’s quick. I’m using mine for both BBC microbitcsnd Arduino development and all the programming tools work out the box. Ok I’ll address the audio issue, I can’t get sound out of the HDMI no matter what I try. However a quick solution for anyone who needs audio it get a cheap Bluetooth speaker, works great. No overheating issues from my testing so built in heat sink is doing a great job. Also runs RetroPi great.