TDA1543 is a miniature and economic DAC which is the only vintage multibit DAC to use single-rail supply, make it simple to use in the portable circuit. It is stereo 16 bit DAC with popular I2s input format. The nominal voltage supply is 5 volt, but with the tolerance can be supply up to 9 volt maximum, makes this DAC can use passive IV with up to 1.5 K ohm resistor to generate undistorted high voltage line output. With this possibility, no wonder this IC never vanished from the DIY audio popularity. From of my previous TDA1543 DAC project, unfortunately this DAC never sound good for me. I am so curious and never stop experimenting to make this DAC sound better. Finally, I can stay with this TDA1543 DAC with few points that need to be addressed. In this post, I will share the steps that I have tried, which makes this TDA1543 sound good, having its own sound signature which can compete with others high performance DAC.