DFPlayer output as Line-Out

[Pimpom]

I'm designing something in which audio plays a small but vital part. A DFPlayer module will be used to play a short audio file and the output will feed an external PA system. The easiest way to do this is to use one side of the BTL outputs as a Line-Out rather than create a balanced-to-unbalanced converter

With this arrangement, one output pin will be open and the other pin will face an unbalanced high impedance load to ground. Is there any possible issue with this arrangement, in terms of stability and distortion? None of the documentations I've seen about DFPlayer is very forthcoming with this kind of information.