After the successful S9, Hidizs came up with a new model, the Pro version, S9 PRO. The biggest difference with S9 is the used DAC chip, which is an ESS9038Q2M in S9 PRO instead of AK4493EQ.
Hi-Res Audio Certified
Hi-Res Audio certification is a design proposed and defined by Sony and recognized by JAS (Japanese Audio Association) and CEA (Consumer Electronics Association), requires the capability of audio devices to handle the digital resolution more than 24-bit/96kHz, for the purpose of performance extreme music quality and original sound reproduction.
With up to 32bit/768kHz PCM, Hidizs S9 Pro DAC amplifier is ideal for a high-resolution audio source playback. As a portable but powerful DAC dongle, S9 Pro has both single-ended and balanced outputs, which means greater power, detailed resolution, more functional, and user friendly. It can even powerfully drive all full-size headphones.