The speakers are wired to a simple aux jack and ... [Olson] seems to be using an external power supply for this mini-amp; but before you count that as a mark against this build, the music you ...

FiiO has announced the BTR17, a new portable headphone amplifier built around Qualcomm’s new flagship QCC5181 Bluetooth chip, which not only complies with the Bluetooth LE Audio standard and has ...