Besides AUX input, it also supports Bluetooth 4.0 + EDR up to 30 feet wireless range in open space, achieving faster and more stable transmission.     With strong compatibility, can work well with common audio devices like iPod, Phone, MP3 players, TV, Echo Dot, CD players, or Streaming Media players and so on.     Using TI's TPA3116 chip, max can provide 100W power for 4~8 ohms passive speakers (50W per channel, at 4 ohm by 19VDC).     HiFi clear and powerful sound, without background noise or audible noise even at large power output, very suitable for home and desktop audio system use.     Super mini size with special appearance design, brushed mental shell, gold-plated terminals looks cute and fashionable.      Amplifier chip: American TI Texas Instruments TPA3116     Max output power: 50W x2 (at 4 ohm/19Vdc)     Input Interface: Bluetooth, 3.5mm AUX     Voice prompts: English Girl     Bluetooth standard protocol: Bluetooth 4.0 + EDR     Power input: DC 9V-24V / 2A or above     Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on     Material: Metal     colour:black / silver          Package Contents:     1 x G5 Amplifier     1 x Power Supply     1 x 3.5 to 3.5 audio cable     1 x 3.5 to RCA audio cable          Only the above package content, other products are not included.     Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.