... black provide,please select it when you order.QA350 MOD V2 is new mod version of QA350, It upgraded the headphone amp chip MAX9722A ... : 500mW/16Ω; 250mW/32Ω; 97mW/150Ω; 49mW/300Ω;Relative QA350, QA350 MOD V2 sound is much better, Very powerful bass, Good timbre, Good ... MUSE MP,Nichicon SILMIC,Panasonic FM,ELNA,Sanyo Poscap....QA350 and QA350 MOD V2 internal PCB board comparison:(In order to improve the ...