The maximum power is 450W+450W and RMS 70W+70W, which can be used for multi speaker impedance of 4-16 ohms, allowing you to enjoy high-performance speakers or components. It has roaring bass, crisp treble, and excellent richness, and most amplifiers can only be used for reminders. 2 microphone inputs are perfect for karaoke Bluetooth: 5.3 RMS power: 70Wx2 power: 450W x2 Channel: 2.0 : 85 db Distortion rate:5% FM Frequency: 87.5-108MHz Frequency: 20Hz-20KHz Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage: AC220V Colour:Black Material:Plastic Package Contents: 1 * Home PowerAmplifier 1 * Remote control (without 2xAAA batteries) 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.