The updated version of the SU-9 Pro, the SMSL SU-9 Ultra, includes all the features that made its predecessor a high-performance DAC, plus a number of new enhancements. The SU-9 Ultra features an AK4191 digital interface paired with an AK4499EX DAC chip, both from AKM. This chip combination provides rich and accurate audio reproduction while being capable of decoding high-resolution data streams up to PCM 32bit 768kHz or DSD512.
Inside the DAC there are high-quality components such as the XMOS XU-316 USB interface, the CK-03 clock circuit - which significantly reduces jitter - and a shielded, regulated power stage capable of delivering a clean, stable electrical signal continuously. The package also includes the RC-8C remote control.