Hello! Using a DAC (digital-to-analog converter) with an Android device can definitely improve the audio quality, especially when listening to high-resolution audio.
Firstly, using a DAC can ensure that the audio signal is converted from digital to analog more accurately and with less distortion, resulting in a clearer sound. Additionally, using a DAC can bypass the built-in DAC of the phone, which can be of lower quality and introduce noise or other unwanted artifacts.
However, the difference in audio quality between using a DAC and the built-in 3.5mm input will depend on a number of factors, such as the quality of the DAC, the quality of the audio file being played, and the quality of the headphones or speakers being used.
Overall, if you are an audiophile or someone who values high-quality audio, investing in a DAC for your Android device is definitely worth considering.