With its S9c Pro, Aune presents a versatile, high-performance HiFi device in an elegantly designed case. The S9c Pro is a DAC and headphone amplifier that can also be used as a volume controller with active speakers. Among the S9c Pro's 1080 components, Aune has integrated high-end audiophile components such as two ES9068AS DAC chips and a USB XMOS interface, enabling it to decode up to PCM 32bit 768kHz, DSD512 and MQA 16x. An ultra-low jitter PLL clock synchronization system and a 50W toroidal transformer coupled to 23900μF capacitors are also present. Its amplification stage is also highly sophisticated, thanks to the integration of 16 dual JFET transistors (2 per output channel). But the special feature of this DAC/headphone amplifier lies mainly in the way it processes the signal. It converts the analog input signal into an I2S signal, enabling it to separate the clock signal from the data, and thus supply the same stream to the XMOS interface and the DAC.