[PROBLEM] 0dB vs Hardware Volume?

[cancunia]

I have an old 32bit version (8.3.9 2024-02-23) of Moode on my Pi Zero W with a LG HI Fi / B&O DAC. All seems to work fine, but am wondering about the Audio settings type of 0dB vs Hardware. Is one better than the other for Audio Quality?

I've always used 'hardware' as I can control it from the Web Interface but now have an amp with remote volume control.

Thanks.