Although very compact, the Shanling UA 1 Pro embeds a high-quality audio circuit built around an ESS ES9219C chip. This famous component for High Fidelity applications incorporates both digital to analog conversion capabilities as well as headphone amplification capabilities. This second version hence offers better performance in terms of harmonic distortion.
On the DAC side, the UA1 is capable of playing high resolution audio files up to 384kHz / 32bit and even DSD files up to DSD256. The output stage is for its part capable of developing up to 80mW of power at 32 Ohm with a minimal noise level, which represents an incomparable performance gain in comparison with the traditional audio outputs of general public portable multimedia devices.