ClassicGOD
100+ Head-Fier
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The issue is that the volume in Q5 is tied to the reading of the potentiometer position and the BT module is not general purpose BT chip, it's a media client oriented one. Not to mention that implementation of the BT module in Q5 is far from typical.Well, the only function I would control directly is Volume. It is clear that you can not control the rest since this is on the transport side.)
The RM1 controls the transport on Android and iOS only. And you can not control Volume anyway.
Making it possible to change volume via BT controls would not only require custom BT firmware (and we aren't even sure if it can handle something like this) but it would also introduce a risk of sudden volume increases (when you had the potentiometer set high, then lowered the volume by BT controls you would get sudden volume jump if you used the potentiometer again).
Making the volume control another separate layer (to prevent volume level issues described above) would just introduce all the issues related to digital volume control that FiiO tried to avoid by using purpose-built resistor ladder volume control chip.
I just don't see how it would be feasible.
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