- Model: FiiO E5 earphone volume booster/amplifier
- 3.5mm stereo audio jack input and output
- Time proven FiiO amplifier circuit chip for excellent dynamics and sound quality
- High S/N ratio, low distortion
- Electronic/digital volume control
- EQ switch boosts bass at your choice
- Amplification powers: 150mW (16 ohm) and 16mW (300 ohm) -- see user's guide
- Response range: 10Hz ~ 100KHz
- Built-in rechargeable lithium battery
- Earphone quick mute feature (by quickly pressing power button)
- Comes with two 3.5mm stereo audio connection cables
- USB charging cable included
- Official product site: http://www.fiio.com.cn/en/productshow.asp?id=8