Thank you for the feedback. This is kind of confusing. I thought fully utilizing the DAC required player support to drive the ESS chip. (What is meant by last sentence in 1st paragraph? https://www.head-fi.org/threads/lg-v20-sound-quality.816024/page-209#post-13787760) The HiFi icon means audio is routing through it, but possibly not optimally. Right? UAPP introduces side effects? Or does it avoid the effects of the Android audio system? Or both? Are there other players that do a better job avoid deleterious effects?