The TDA 1543 is a really poor place to start when building a DAC (wasn’t great when it launched, even). It was a budget part when it was introduced, and it performs like one. Barely manages 14 bits of dynamic range, roll-off starting at 6 kHz, significant aliasing issues, harmonic/distortion issues at audible levels, lousy jitter performance, and poor noise performance.
I’ve heard more DACs that use the 1543 than I care to think about. Most of them seem to be low-volume boutique stuff. All of them were clearly colored and lacked transparency (objectively and subjectively). Even the ones that took heroic, and expensive, measures to try and work around the chips limitations.
Now the TDA 1541, in double-crown form, is a somewhat different matter.