I nave a inspiron 7720 with dell audio installed. However after recent creators update i have access to dolby for headphones . i was wondering whether combination of both softwares would damage laptop or earphone speakers?
For best results, I would try to use only one or the other at a time, i.e. disable as much of the Dell Audio processing as possible when using Dolby Access and vice versa. But even if you didn't do that, it wouldn't be "unsafe" to have both. The main use case for Dolby Access seems to be in order to transmit Atmos audio, though. That can only be sent as a bitstream audio signal on HDMI to an AV receiver that is capable of decoding Atmos, and Dell Audio's processing wouldn't affect a bitstream signal at all.