Feature

●Product description: A tube amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or performance of a signal. Connect this 6J1 tube preamp between the sound source and it can effectively filter the digital taste.
●Good performance: Connect the 6J1 tube preamp between the sound source and amplifier, it effectively filters the digital taste, the music and human voice will be relatively good. Eight 470UF capacitor filters are very clean, the excellent power supply system does not hum, the filaments are powered by DC 12V and must be connected in series to reduce noise.
●Easy to use: the coupling capacitor is an electrode-free electrolytic capacitor with high frequency and low resistance. With a DC 5.5 x 2.1 socket and an AC 12 V transformer, you can also use an AC 12 V transformer without a plug, you just need to welding the power cord to the board. The DC input cannot be used, or it cannot work.
●【Instructions for use】Sound channel input: connected to mobile phone, computer, MP3, MP4 and many other music players. Sound channel output: connected to the audio signal input of power amplifier. On/Off Switch/Volume Control: Turn the knob counter-clockwise to decrease the volume, and continue to rotate until you hear the "ticking" to turn off the device. Turn the knob clockwise until you hear the sound to turn on, and continue to rotate
●Widely used: the tube amplifier produces a warmer or more natural valve sound, makes music and the human voice is relatively good. This kit comes in parts so you can assemble it yourself, enjoy the process of building your own tube amplifier.


Description

Specifications:

Type: 6J1 tube (replacement model 6AK5, 6AU6, 5654 etc.)
Channel types: 2.0/stereo.
Voltage current: AC 12 V 0.8 A or higher.
Power interface: 5.5 x 2.5 plug.
PCB Size: 77 x 75 mm / 3.03 x 2.95 inches

Package includes:
1 x circuit board.
1 x 2W 2.2Ω Metal Film Resistor
6 x 1N4007 large current diodes
6 x 4.7K resistors.
2 x 1K resistors.
4 x 47Ω resistors.
2 x 2.2K resistors.
2 x 470K resistors.
2 x 100K resistors.
2 x 200Ω resistors.
9 x 50V 470UF capacitors
4 x 50V 1UF monolithic ceramic capacitors
2 x D667 transistors
2 x B647 transistors
1 x 50K potentiometer.
2 x 3 mm blue LEDs.
1 x DC005 power connector.
2 x pipe base.
2 x 6J1 tubes.
2 x RCA base.
1 set x spacers and screws.
1 x potentiometer cap.