Recently received a Philips x1. No more words. With the quality of 2000+, it is relatively durable, flexible and transparent. complete. Push it with c4 and replace it with zk line. After listening to the change for a month, I changed back to the original line. After changing the z-k line, the low-frequency diving becomes deeper and the texture becomes better. The voice density is higher, and the high frequency is brighter. Musical instruments Read the original text >>