AC 12V 6J1 Electronic Tube Bile Preamplifier with Boost Function Electron Valve Pre-amp Tube Stereo Bile Preamplifier Board Buffer Effector DIY Kit, Replace the Tube Type 6AK5, 5654, 6AU6, etc

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- FE-6J1-2 fever tube pre-amp board is the circuit schematic design imitation crew Music fax X-10D, to be rational optimization, more stable performance than the original machine, tube play 10% increase.
- Using a single 12V AC input, comes with boost function, low supply voltage to the effect of high-pressure tube.
- The capacitance filter of 8 470UFs is very clean.
- 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.
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