LEPY269Pro amplifier Input voltage: AC220V (adapter) or 12V Output power: 58WX4 Output channels: 4.1CH, (4-channel full sound, 1 channel connected to active subwoofer) Four-way partition adjustment A/B zone balance control Input port: RCA stereo, USB, SD, COAXIAL. Bluetooth version: V5.0 Radio frequency: FM87.5-108MHz Applicable devices: computers, mobile phones, tablets, smart TVs, CD players Applicable scenarios: home floor speakers, home theater background music, beauty salons, small supermarkets fixed resistance radio speakers, 12V car four-door speakers, motorcycle bookshelf speakers, etc. Output applicable: 2.0 speakers, 2.0 plus center speakers, 2-channel speakers plus active subwoofers (2.1), 4-channel speakers, 4-channel + active subwoofer (4.1-channel) Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Colour:black Material:Aluminum Alloy Package Contents: 1 x LP-269 PRO Amplifier 1 x Power Adapter 1 x Remote Control 1 x Audio Cable Only the above package content, other products are not included. Note: Light reflection 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.