I squeezed in some time to compare the LCDi4s with HiFiMan’s flagship RE2000 in-ear headphones ($2,000), and the HiFiMans’ sound was more inside my skull. I missed the LCDi4s’ vast, beautifully focused soundstage, deliciously transparent midrange, and clearer top end, and the LCDi4s’ low-bass articulation and power handily trumped the RE2000s’.