3.5mm SPDIF input (optical, coaxial) digital connector to receive PCM signals up to 24-bit/192kHz
Standard mini USB interface: Connect to your PC for digital audio transfer and/or charge of the 1500 mAh internal battery
3.5mm Analog Line-In for use with other audio sources, 18-Pin multi-functional interface to connect FiiO's L7 and E9 docks
Digital Bass, Treble, Gain, Volume Controls
3.5 mm stereo headphone output: Suitable for 16-150 ohm headphones; MAX output current > 80 mA; THD <0.003%@1KHz
Standard MINI USB Interface - connect with PC to make digital audio transfer possible and make battery charge possible3.5mm two-channel Headphone Output - suitable for various headphones with 16O~300O3.5mm SPDIF input connector - connect with high-definition player and receive PCM signal3.5mm Line In interface - connect with audio output LO&PO of audio players.18 Pin multifunctional interface - to make audio and data transfer possible in conjunction with L7 and E9.