Since it is a player, let's mainly talk about the feeling of sound. I currently have IP5 on the front end of my hand, IPC,RH1,ZK， Test the earphones with the UE900 and GR10 at hand, and tell the difference between each front end.

First, use GR10, which is the legendary voice pop god plug. It is said that the intermediate frequency can be comparable to customized, although it is only a single unit moving iron. Under this earphone, I obviously feel that under ZX1, the effect is obviously better than IP5 and IPC. Maybe because the APPLE series itself is the voice color of boiled water, the characteristics of GR10 are not given full play. Under ZX1, the voice of GR10 is full and flattering, and it is not tired after listening for a long time. The effect of RH1 is similar to that of ZK, but it is not as good as that of zx1.

Then use UE900 to test, this earphone is not particularly popular among listeners. Although it is called a four unit moving iron, its parameters are very good, but Logitech's tuning is really not satisfactory. Under the UE900 test, ZX1 still has the best effect, but the gap between truth telling and Apple series is not as obvious as under GR10.