Blackbandt
To be honest/clearer, I haven't checked the HP/LP changes that I'm pretty sure were mentioned in one of the updates - however I set it up in the beginning seems to work fine with my sub, cutting off the low freq's from the speakers (allowing only mainly upper bass and mids etc, dedicated tweeters handling the treble) and passing the lows to sub. I didn't really do much of an extensive trial/comparison session, but it seems ok.
Incidentally, just on the off chance you weren't aware, instead of going to audio settings through the main settings for Dudu, if you open the Sound Master app (or install it from the store if not already present) you can try other people's configs/save your own/share etc.
(if you want to) If you have a scroll through the shared presets you'll find mine called 4.1w/Sub 3. I shared it as a basic start for myself and others, hi/lo pass is set quite high (adjust accordingly) at 150Hz with the EQ left flat to be configured by user (everyone's got different setups so there was no point EQ'ing my modest rig and sharing as it would only really apply to how my system sounds, obvs).
But yeah, even if not shared for others use it can serve a purpose for saving and restoring your audio settings.
Oh and, now that I'm in the car, account backup is under Account Connection/Cloud Backup
