Selecting specific device on Mac with multiple audio devices

Problem: on my 2017 iMac running macOS 10.14.6, I have a number of possible sound outputs as seen in the attached jpg. Currently my headphones (wired) are selected in the screenshot, but I usually have internal spkr selected.Makes no difference, the sound always comes out on the Acer display's miserable muffled built-in spkrs. Since the Acer is connected USB-C/HDMI there's really no way to hide its spkrs.Almost seems like Ring s/w looks at the list and selects the alphabetically first one.Pls have Ring app on Mac follow the sys prefs-selected output as almost all other apps do. Or give me a selector in Ring prefs; some apps have selections for Follow system selection as well as selections to pin specific devices.