The WM8501 supports data input word lengths from 16 to 24-bits and sampling rates up to 192kHz. The WM8501 consists of a serial interface port, digital interpolation filters, multi-bit sigma delta modulators and stereo DAC in a 14-lead SOIC package.

The hardware control interface is used for the selection of audio data interface format, enable and de-emphasis. The WM8501 supports I²S, right Justified or DSP interfaces.

Operating on separate analog and digital supplies the WM8501 offers very lower power consumption from the digital section, whilst supporting enhanced load drive from the analog output.