Can someone give me a suggestion for a good kz iem I listened to all kinds of music like pop, rock, jpop, kpop.

1) 167,158 2) 163,504 3) 161,911

just bought my v2s, im using it as a DAC with my PC, sometimes there are weird cracking noises, but SQ still better than my PC sound card. but when i use it as an AMP with my phone, nothing different, do i nêed to do anything else?

Im new to diy DAP/AMP can i ask a few questions?? How can i connect this to a phone use it as an AMP, use On-The-go usb or normal audio jack??? And is it the same on computer?? Does walnut have a dac?? And how can i use it???