The Mojo has the better audio quality while the HA-2SE is great for Apple devices as no need for the Camera Connection cable but you can't beat the DFR connected to a small phone for portability, especially if also used with a Fiio RM1 BT Remote. DFR using same DAC as HA-2SE but sounds more refined to my ears. ??: ???????????????,???????? ???????????????????????? ???????????????????????? HA-2SE is an elegant yet sophisticated portable headphone amplifier with built-in rechargeable battery. It is engineered to enhance music playback from mobile phones and portable music players. Its genuine leather casing with contrast stitching and bevelled aluminium edges are eye-catching. OPPO, a camera phone brand enjoyed by young people around the world, specializes in designing innovative mobile photography technology. OPPO, a camera phone brand enjoyed by young people around the world, specializes in designing innovative mobile photography technology. The OPPO HA-2SE is an elegant yet sophisticated portable headphone amplifier with built-in rechargeable battery. It is engineered to enhance music playback from mobile phones and portable music ??????PDF???????OPPO Digital??????????(?????)?????????????? HA-1(JP) - HA-1 User Manual 5-7-2014 JP; HA-2SE Since Oppo Ha-2se is MFI Apple certified it can be connected to your new iPhone 7 as Headphones DAC / Amp so you get amazing sound quality and the option to connect yo beloved headphones by the 3.5 jack, and a power charge to your iPhone while enjoying the music by the powerful 3000mAh battery. OPPO Sonica Grand. OPPO Sonica DAC. OPPO Sonica OPPO HA-2SE is engineered to enhance music playback from mobile phones and portable music players. Featuring hybrid class AB amplification and a USB DAC, the HA-2SE offers high performance digital-to-analog conversion for Apple's iPhone/iPod products, a wide range of Android devices, PC and Mac computers. The HA-2SE functions as an external battery pack to charge your mobile