The BR13 is a professional Bluetooth receiver, which only supports receiving, not transmitting, and is priced at about half of BTA30PRO. 2. The input/output ports of BR13 are the same as BTA30PRO, with powerful SPDIF input and output, as well as upsampling function. 3. The BR13 adopts aluminum alloy design, equipped with display, using QCC5125 program, independent DAC and amplifier chips. The USB DAC function supports up to 96k/24bit which can be upsampling to 192k/24bit via BR13.And it aslo supports for 7 kinds of EQ adjustment and 2 kinds of PEQ. 4. At the same time, like BTA30PRO, there is a supporting APP to realize more functions. 5. So if you just want a Bluetooth receiver, you can choose the BR13. But if you need the Bluetooth transmitting as well as receiving function, the BTA30PRO is still the best choice.