Features:AmplifierExcellent V RMS amplification function, effective high-quality sound amplification, maximum output power 200W+200W, bringing you an excellent listening experience, suitable for 2-10 inch diameter speakers. AdjustableEquipped with an adjustable volume knob and blue indicator light, it is easier to operate according to your needs. Phantom PowerHas a pure 12V 3A phantom battery, which can provide stable power for your condenser microphone and is more convenient to use. Widely CompatibleThe amplifier is suitable for most types of audio playback devices and radios, and can be used in karaoke, movie theaters, parties, get-togethers, etc. PortableMade of aluminum alloy, compact and lightweight, suitable for various occasions, easy to carry and store. Specifications:Type: audio amplifierMaterial: aluminum alloy + electronic componentsProduct color: blackModel: AK170Frequency: 20Hz-20KHzPower supply: DC 12VEffective power: 20W+20WMaximum power: 200W+200WChannel: 2CHLoad impedance: 4-16 ohmsSignal to noise ratio: >90 dBDistortion rate : 0.01%Size: 10*8*2cm/3.93*3.14*0.79 inches (length*width*height)Net weight: 220g/7.76 ouncesPortable: Made of aluminum alloy material, compact Lightweight, suitable for various occasions, easy to carry and store. Phantom Power: With a pure 12V 3A phantom battery, it can provide stable power to power your condenser microphone, making it more convenient to use. Amplifier: Excellent V RMS amplification function, effectively amplifying high-quality sound, maximum output power 200W+200W, bringing you an excellent listening experience, suitable for speakers 2-10 inches in diameter. Adjustable: Equipped with adjustable volume knob and blue indicator light, easier to operate according to your needs. Widely Compatible: This sound amplifier is suitable for most types of audio playback devices and radios, and can be used in karaoke, movie theaters, parties, get-togethers, etc.