Raspberry Pi 4 HiFi DAC Pro Hat ES9038Q2M Audio Card

What amplifier are you using? It looks very clean on the front.

Interesting, and I feel a bit let down as in this video you are using the HEADPHONE out to send audio to amp, rather than XLR, the headphone out amp won't give as good a HiDef sound.... it would be good if this board had RCA out instead of XLR out. It is possible to convert XLR to RCA via cables?

is raspberry 3a+ 512mb still recommended?

That ist defenetly the wrong music for that player...

Music is too loud - common mistake. Improve your presentation: completely remove music.

could you break down what the USB stick is doing in this case if there's a SD card included, apologies if this is a simple question, very new to this!

Red to red God dammit!!!!!!

Would this be a useful setup for making a CarPi? This would be perfect to get an RCA type output to make connection to car amplifiers.

A server-quality power supply to power the DAC board (and Pi via the headers) is a better choice for audiophiles: the RasPi PS isn’t as well made or regulated, and may not output enough current comparatively.