HP-1

try to lookup Kali Audio HP-1, it's closed back but they put DSP on it and magically can tell low region accurately, it perfectly match my speakers (Kali LP-6 and my SB Acoustics custom made that have flat frequency) before i never able to trust headphone that i own, i mean it's because i never want

Kali Audio's headphone the HP-1 is up there for the competition, i'm happy user. they have 3 sound settings and the studio mode is accurate sounding, the DSP technology is superb. they claim their battery is 40 hours and yes i usually charge it after more than 3 days of studio session and casual lis