<p>1. Humanized design. Slide the knob to adjust the sensitivity, tool-free operation, built-in plug-and-play audio socket, easy to use.</p> <p>2. Good display effect. The 6e2 cat-eye tube has high sensitivity and uniform brightness when displayed. The product has a built-in amplifier circuit, and the volume changes are clearly visible; left, right channel or stereo mode can be selected.</p> <p>3. Optimized sound quality. Supports treble attenuation function, highlights bass and drum rhythm, and displays more agilely, suitable for a variety of music styles.</p> <p>4. Complete accessories. USB 5V power supply, complete accessories, ready to use out of the box, free audio cable and charging cable.</p> <p>5. Stable operation. Built-in 6.3V filament drive circuit, stable voltage, extended tube life, ensure long-term stable operation.</p> <p>6. Easy to use. Built-in pickup, no need to use audio cable external devices.</p> <p>Parameters:</p> <p>Level tube type: 6E2 cat's eye level</p> <p>Working voltage: 5V</p> <p>Left\/right channel switching: Supported</p> <p>Pickup: Supported</p> <p>Overall size: 86 x 82 x 49mm</p> <p>Colour:Transparent</p> <p>Material:ABS+GLASS</p> <p>Package Contents:</p> <p>1 * Driver board</p> <p>1 * 6E2 tube</p> <p>1 * Audio cable</p> <p>1 * USB power cable</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>