Feature: 1. CUSTOMIZABLE LIGHTING: Sporting a stylish design, our 6E2 electronic tube driver board comes with switch control and dynamic light adjustments to match your ambiance. The user can customize the visual experience to their taste without compromising on the functionality of the board. 2. MULTIPLE INTERFACES: Equipped with a built in microphone, our driver board eliminates the need for external sound lines, making it suitable for use within a vehicle environment. It also keeps various interfaces intact for flexible connections for devices like mobile phones and speakers. Users can effortlessly switch between sound pickup functions according to application scenarios, facilitating a variety of sound inputs. 3. MULTI CHANNEL SUPPORT: Uniformly bright and sensitive, the 6E2 electronic tube display ensures enhanced signal strength for accurate and reliable performance, thanks to the built in amplifier circuit. A convenient toggle switch enables users to switch between left and right channel or stereo mode, enhancing the auditory experience with a single screen displaying volume for two channels. 4. PLUG AND PLAY DESIGN: The device employs a sliding knob design that allows users to easily adjust sensitivity without the need for additional tools. Requiring no separate sound line or distributor, it offers two sound sockets for input and output right on the circuit board, thus ensuring convenient usage. 5. PROTECTIVE CIRCUIT: Our driver board features an inbuilt 6.3V filament drive circuit that prevents voltage overload, thus prolonging tube lifespan and stabilizing long term operation. The onboard treble attenuation function enhances bass and drum performance, offering rhythmical and dynamic level indication. The package also includes sound and charging cables for a complete unboxing experience. 6. FLAME RESISTANT HOUSING: 6E2 VU meter driver board comes with a flame resistant case that offers both aesthetic appeal and reliability. The gold plated anti oxidation connectors on the left and right channel data wire ensure low impedance for stable signal transmission, securing steady performance. Specification: Item Type: USB Low Voltage 6E2 Electronic Tube Driver Board Product Material: Acrylic Power Supply Port: USB C Power Supply: DC 5V Product Size: Approx. 85 x 60 x 46mm / 3.3 x 2.4 x 1.8in sound Port: 2 x 3.5mm sound ports Channel: Left channel/Stereo/Right channel (switchable) Volume Control: Volume knob control Switches: Treble attenuation switch x 1 Light switch x 1 Sound pickup switch x 1 Power switch x 1. Package List: 1 x 6E2 Electronic Tube Driver Board 1 x USB Cable 1 x Sound Cable