Khadas has come up with a no-brainer of a solution for attaching a headphone amp to any MagSafe-compatible iPhone with the Tea. Tea is an ultra-slim headphone amplifier that's secured via MagSafe and plugs right into the iPhone's Lightning port. The amp has an 1160mAh battery to power your wired headphones for 8 hours and the 3.5mm jack supports up to 300 ohm high impedance headphones. It also has microphones on the bottom of the device so you can take calls without taking your headphones off and it supports LDAC and aptX HD wireless Bluetooth audio if you use it with an Android device.
Ships this March.