1. CK4 is a HIFI-level music player with a 4.3-inch screen and video playback function. It still takes "faithful restoration of the scene" as its main style.

2. Speaking of HIFI, its meaning is high fidelity, that is, the restoration of the sound source. In the current digital era, from the music signal processing process, fidelity is nothing more than the sound sampling rate and the playback process. The two basic indicators of jitter, CK4 uses up to 24 bit/192KHz sampling and a jitter value of less than 5 picoseconds and an excellent headphone amplifier chip to provide sufficient thrust and minimize coloration in tuning to achieve the best possible recording scene. reduction.