This $20 Chinese dongle fits the ASR/Amir model of cheap equals good. Low price excuses shortcomings. The digital side might not be horrible. However, converting to analog is where the rubber meets the road to achieve quality audio. At the $20 price point and small package, the analog conversion will be mediocre at best. Experience in the advanced signal processing world is my bona fide.
Chew on the this snake oil sounding statement from the HiBy site describing one of their headphone products. "The Yves earphones are not only compact and lightweight but also equipped with the latest 6mm titanium-plated composite molecular diaphragm, which allows the micro-dynamic driver to faithfully reproduce the natural sound and surging sensation of music."

