https://www.theverge.com/2018/6/13/17457778/eartrumpet-windows-10-audio-app

Microsoft has made some steady improvements to audio control in Windows over the years, but if you use multiple outputs, headsets, or digital-to-analogue converters then you probably already know that Windows 10 doesn’t handle them well. Thankfully, a third-party app has been trying to solve these issues recently and is getting a big update today.

Former Microsoft engineer Dave Amenta, developer David Golden (of MetroTwit fame), and Microsoft MVP Rafael Rivera have teamed up to create EarTrumpet. The team “created EarTrumpet back in 2015 to fill a number of gaps in the audio management experience on Windows 10,” explains Rafael Rivera. EarTrumpet includes features like the ability to control classic and modern app volumes individually, a quick switch between default audio devices, and even the ability to move apps between playback devices.