FiiO L7

FiiO L7 Adapter allows more efficient use of amplifier E7/07/17th Once L7 connect to an amplifier, USB port can be used as a power source for charging batteries. If the USB port is connected to a computer, combinations E7 and L7 units can be used as a DAC . The docking station has a 3.5mm line out, so you can connect external devices such as desktop speakers or amplifiers. Cables are not included.
Specifications:

Designed for:
FiiO E7/07/17

Connectors:
1x Docking port
1x Mini USB
1x 3.5 mm line out