High quality sound impresses on human mind. The "Realistic Original Sound Technology" developed by OPPO provides an experience such as listening the sound in the concert hall with detailed Hi-Fi sound and 3D sound field.
The R9s and R9s Plus achieve high quality sound even with an ordinary amplifiers; impressive wonderful sound can be experienced anytime and anywhere.
* The R9s/R9s Plus integrate an advanced audio headphone D/A converter, the AK4376.
Asahi Kasei Microdevices Corporation, the world leading audio converter supplier, announced that oppo has chosen AKM’s Advanced Audio Headphone DAC AK4375A to provide the best sounding quality for its smartphone, R7.
Unlike conventional audio solutions commonly used in many high-end smartphones, AKM’s Advanced Audio Headphone DAC AK4375A provides the user with state-of-the-art Hi-Fi sound playback.