6J1 Valve Vacuum Tube Pre AMP Preamplifier Hifi Stereo Audio Board Musical Fidelity Kit

Connect the 6J1 tube pre-amp between sound source and amplifier, it can filter digital flavor effectively, professional and practical Eight 470UF capacitor filters, excellent power system with no hum, stable and performance Coupling capacitor adopts electrodeless electrolytic capacitor, high frequency and low resistance Using DC 5.5×2.1 socket and AC 12V transformer, you can also use AC 12V transformer without plug, just weld the power cord onto the circuit board, easy to use You can enjoy the process of building your own tube amplifier with this kit