[Exquisite Appearance & Illuminating]: The product's appearance is stylishly designed, with a protective bracket and decorative small light for a nostalgic ambience. The small light supports switch control and dynamic light adjustment so that users can customize the visual effect according to their preferences. Designed with flameretardant housing, it is both aesthetically pleasing and reliable. [Built-in Sound Pickup & Reserve Multiple Interfaces]: The driver board is built-in with a sound pickup, which can be used directly in the car environment without external audio cables, and at the same time retains a variety of interfaces to support flexible connection of cellphones, speakers, and other devices. Users can freely switch the pickup function, according to the application scenario to switch freely, to realize convenient and diversified audio input. [Accurate Level Indication & Multi-Channel Support]: The 6E2 tube display is uniformly bright and sensitive, with built-in amplification circuitry that enhances signal strength for more accurate and reliable performance. Convenient toggle switches allow users to switch to the left channel, right channel, or stereo mode, and a single display can show the volumelevel of both channels, enhancing the listening experience. [Plug&Play Design]: The device features a sliding knob design that makes it easy for users to adjust the sensitivity without the need for any additional tools. The device does not require connecting a separate audio cable or splitter, with two audio sockets on the board for input and output, which makes it incredibly convenient to use. [Professional Protective Circuit & Rich Accessories]: The driver board comes with a 6.3V filament driver circuit that effectively prevents the filament voltage from becoming too high or too low, which can shorten the lifespan of the electronic tubes. This ensures that the device operates stably for a long time. Additiona