Color: Only DIY Board Turn on the power, the tube begins to heat, at this moment the voltage rises from zero, the electron tube filament heating is finished, at the same time boost finish. Excellent power supply system to ensure that the four 470UF capacitor filter clean, tube filament is connected in series, DC 12V power supply, reducing noise. Using MET series of non-polar capacitor, high-frequency low-resistance electrolytic capacitors, 1% precision metal film resistors, J-class military regulation tube 6J1. Connection Way: › See more product details Product information Collapse All Expand All Item details ASIN B0DNF9D1GW Brand Name Generic Manufacturer Generic Warranty & Support Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here. Product Warranty: For warranty information about this product, please click here Feedback Would you like to tell us about a lower price?
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