The volume control of this amp uses the DS1868 dual digital pot IC in place of the usual 10K ... this would be a great way to adjust audio volume and provide a more fine-grained control.
The HiFiMAN SERENADE Wireless DAC/Headphone Amplifier offers lossless streaming over Wi-Fi for $200 less than its predecessor ...
[Ynze] has built an audio amplifier that looks ... interesting things about [Ynze’s] amp, as well as many of the Gainclones, is the fact that they use no circuit board. All wiring is done ...