6E2 Vacuum Tube VU Meter Board USB 5V | Audio Level Indicator

6E2 Cat's-Eye Vacuum Tube VU Meter Board – Retro Audio Level Indicator

Bring a touch of vintage charm and functional elegance to your audio setup with this 6E2 Vacuum Tube VU Meter Driver Board. Powered by a standard USB 5V supply, it features the iconic glowing 6E2 cat's-eye tube for a dual-channel audio level display that is as beautiful as it is functional. Whether mounted in a car audio system, a home Hi-Fi rack, or displayed as a retro collectible, this board delivers a mesmerizing visual response to your music. Made in Mainland China.

Key Features

• 6E2 Cat's-Eye Tube Display: Carefully selected for uniform brightness, sensitive response, and clear level indication from low volume to full output — a true vintage aesthetic centerpiece.
• Upgraded Built-In Microphone: High-sensitivity onboard microphone responds to ambient music without needing an audio cable. Seamlessly switch between microphone and audio cable input via a dedicated toggle switch.
• Dual Audio Interface: Gold-plated, oxidation-resistant audio connectors support both input and output for easy plug-and-play compatibility with most audio equipment.
• Intelligent Display Modes: Switch between left/right channel modes on a single-board dual-channel level indicator. A high-frequency attenuation switch enhances bass and drum rhythm response for a more dynamic, rhythmic display.
• Adjustable Sensitivity: Slide knob lets you dial in sensitivity quickly and easily — no tools required.
• Decorative LED Accent Lights: Independently switched onboard LEDs add a warm retro glow to complement the tube display.
• Stable Power Management: Built-in 6.3V voltage regulator circuit maintains a consistent filament voltage for the vacuum tube, helping extend tube lifespan and ensure reliable performance.
• Ready to Use: Pre-assembled acrylic shell and protective bracket — no film to peel or screws to tighten. Includes USB adapter and audio cable right in the box.

Specifications

What's in the Box

• 1× Driver Board
• 1× 6E2 Vacuum Tube
• 1× USB Power Adapter
• 1× Audio Cable
• 1× Charging Cable

Applications

Perfect for car audio level visualization, home Hi-Fi system decoration, retro-style desk ornaments, music beat visualization, and DIY audio electronics projects.

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Frequently Asked Questions

Q: What power supply does the 6E2 VU Meter Board require?

A: The board runs on a standard USB 5V power supply. It includes a built-in 6.3V voltage regulator to maintain stable filament voltage for the 6E2 vacuum tube. A USB adapter and cable are included in the package, so no additional power supply is needed.

Q: Can the VU meter board work without an audio cable connection?

A: Yes! The board features an upgraded built-in high-sensitivity microphone that responds to ambient music without any cable connection. You can switch between microphone mode and audio cable input mode using the onboard toggle switch, making it flexible for a variety of setups.

Q: Is the 6E2 VU Meter Board pre-assembled or does it require assembly?

A: It comes pre-assembled with the protective bracket and acrylic shell already fitted. There is no need to peel protective film or tighten screws — simply connect it to a USB power source and plug in your audio cable (or use the microphone mode) and it is ready to go.

Q: What display modes does the board support?

A: The board supports left channel and right channel display modes, switchable via onboard controls. It also features a high-frequency attenuation switch that boosts bass and drum rhythm response, creating a more dynamic and visually engaging level display.