This Class D Power Amplifier have strong output power and low frequency output: The T9 Bluetooth speaker Amp Each channel can output 100W(4OHM), match perfectly and easily to drive all 3-8OHM passive speakers, adds a low frequency output easy to connect active subwoofer and build 2.1 channel system, the bass effects is greatly enhancedAIYIMA T9 bluetooth tube amplifier With multiple digital audio inputs: Bluetooth 5.0 / USB / Coaxial / Optical / stereo RCA, compatible with most audio device such as phones, computers, tablets, TVs, TV, CD players etc. The perfect combination of DAC and amplifier, very suitale for audiophiles who have various audio devicesUnique and Amazing Combination: this AIYIMA T9 2 channel home stereo amplifier with VU meter into whole in such a mini size, when enjoy HiFi music, the pointer dancing in the warm light with strong vintage feelings, dynamically decorates the audio system spaceHiFi clear sound with tone control: resonable circuit and concise wiring, adopts vacuum tubes to soften the sound and filter out the digital feelings, sounds warm and sweet without noise.AIYIMA T9 bluetooth tube amp Also with treble and bass knobs to adjust one's own preferable sound styles, presents HiFi music with rousing highs and deep lowsUpgraded USB Dac Amp,Practical functions to simplify use: with input selection and indicators,and you can cancel the hibernation prompt according to your needs,clearly to show the working status in real time; aluminum alloy case is specially designed, cool and unique to decorate your desktop space.With DC24V Power Adapter&With Remote Control(Not include AA Battery)