6J1 Valve Preamp Buffer DIY Kits, 6J1 Electronic Tube Preamp Amplifier Board Headphone Amp Parts Kit

6J1 Valve Preamp Buffer DIY Kits, 6J1 Electronic Tube Preamp Amplifier Board Headphone Amp Parts Kit

• EASY TO INSTALL - 6J1 tube pre-amp board DIY kits ,Easy to install,Stable performance, Excellent sound effects
• FILTER DIGITAL FLAVOR - Connect the 6J1 tube pre-amp between sound source and amplifier, it will effectively filter digital flavor, the music and human voice will be relatively good.
• DIY PREAMPLIFIER KIT - This DIY preamp module kit comes in parts so you can assemble them together by yourself, enjoy the process of building your own tube amplifier
• NO HUM - Eight 470UF capacitor filter is very clean, excellent power system wire to no hum, filaments are powered with DC 12V and need to be connected in series in order to reduce noise. Coupling capacitor is electrodeless electrolytic capacitor with and low resistance
• AC 12V INPUT - Use DC3.5/5.5*2.1 plug, AC 12V power adapter, if you want to use no plug AC 12V transformer, need to weld the power line on the circuit board. Please note that can't use DC power input, otherwise, it doesn't work.

<p> <b>Specifications:</b><br /> Type: 6J1 tube (substitution model 6AK5, 6AU6, 5654 etc.)<br /> Channel Types: 2.0 / stereo<br /> Voltage & Current: AC12V 0.8A or above<br /> Power Interface: 5.5 * 2.5 plug<br /> Circuit Board Size: 77 x 75mm / 3.03 x 2.95"<br /> <br /> <b>Instruction: </b><br /> 1, AC 12V Input: using DC 5.5*2.1 socket and AC 12V transformer, you can also use AC 12V transformer without plug, just need to weld the power cord onto the circuit board. DC power input can not be used, or it will not work.<br /> 2, Sound Channel Input: Connected to mobile phone, computer, MP3, MP4 and many other music players.<br /> 3, Sound Channel Output: Connected to the audio signal input of power amplifier.<br /> 4, Power Switch/Volume Knob: Rotate the knob anticlockwise to turn down volume, and continue rotating until you hear the sound "tick" to power off. Rotate the knob clockwise until you hear the sound "tick" to power on and continue rotating to turn up volume.<br /> <br /> <b>Package Includes:</b><br /> 1 x PCB Board<br /> 1 x 2W 2.2Ω Metal Film Resistor<br /> 6 x 1N4007 Large Current Diodes<br /> 6 x 4.7K Resistors<br /> 2 x 1K Resistors<br /> 4 x 47Ω Resistors<br /> 2 x 2.2K Resistors<br /> 2 x 470K Resistors<br /> 2 x 100K Resistors<br /> 2 x 200Ω Resistors<br /> 9 x 50V 470UF Capacitors<br /> 4 x 50V 1UF Monolithic Ceramic Capacitors<br /> 2 x D667 Transistors<br /> 2 x B647 Transistors<br /> 1 x 50K Potentiometer<br /> 2 x 3mm Blue LED<br /> 1 x DC005 Power Connector<br /> 2 x Tube Base<br /> 2 x 6J1 Tubes<br /> 2 x RCA Base<br /> 1 set x Standoff and Screws </p>