What’s the advantage of two dacs? My at has 1 dac. Does it matter? So many questions
Unless it hasn’t been answered previously.
The BTR5 has a single ended (3.5 mm) output and a balanced (2.5 mm) output.
Single ended output uses only one DAC because it provides only needs a left and right signal and shares a common ground to each driver.
Balanced output require two DACs because it provides two signals to each driver. Each driver gets both the normal signal from the single ended DAC and, instead of the common ground, each driver also gets an inverted signal from the second DAC (180° out of phase to the first).
This doubles the strength of the signal, reduces the crosstalk by eliminating the common ground and, contrary to common belief, actually reduces any noise picked up by the cable (known as common mode rejection) — any noise will be seen as DC and be ignored by the driver (I could explain further but my brain is hurting). Given how little noise short cables will pickup actually makes the noise rejection benefit a moot point anyway.