Those are simply inexpensive USB DACs in the smallest possible form factor, and they can vary wildly in price and quality.

Audio/video equipment typically has both analog and digital outputs, and most analog signals are not subject to copy protection. Therefore, the analog outputs can be used to re-record the content ...

[Bill Hammack] explains how this assembly is used in a typewriter and how a whiffletree can convert binary data to a set of analog outputs.

Through the use of embedded ADCs in microcontrollers we can address many essential use cases, ranging from measuring the setting on a potentiometer, to reading an analog output line on sensors ...

It needs a decent digital-to-analog converter (DAC), and a choice of digital and analog outputs so you can connect it to a ...