ITEM NAME:12AU7 Preamp Electron Vacuum Tube Amplifier Accessories Replace ECC83 6189 X5H7 ☆★ Product Details ★☆ 12AU7 Preamp Electron Vacuum Tube Amplifier Accessories Replace ECC83 6189 X5H7 High-quality 12AU7 medium-gain vacuum tube, single. For ECC82/ 6189/ 5963/ 5814 vacuum tube replacement. Miniature dual triode and 9-pin design. Low frequency voltage amplification and ultra low noise. perfect for Hi-Fi low noise line amplifier and phase invertion push-pull amplifier circuits. Model: 12AU7 Material: glass Color: transparent color + red word Classifications: Dual Triode Cathode Type: Coated Unipotential Heater Voltage: 6.3V Heater Current: 0.3A Amplification Factor: 20 Anode Voltage: 300V Anode Current: 11.8mA Bias Voltage: -50V Item Size: 5.6 * 2cm / 2.2 * 0.8in(Height * Diameter) Item Weight: 12g/ 0.4oz Package List: 1* 12AU7 Electronic Tube