we noticed that Monoprice's Bluetooth Streaming Music Receiver appears to be functionally identical to the StarTech BT2A. When we opened both models, we found that they use the same circuit board ...

Small circuit boards for Bluetooth receivers with built ... Connect the other ends of the two speaker cables to the terminals on the Bluetooth receiver, again observing polarity.

In addition to being compact, low cost, and power efficient, IoT devices must provide flexible support for Bluetooth ... and board impedances without an external impedance-matching circuit ...

This was achieved by modifying the receiver architecture ... while simplifying the board design process. The integrated impedance-matching circuit technology presented by Renesas at ISSCC 2015 enabled ...