Vacuum Tube Amplifier Board 25W 6J1+LM1875 Electronic Valve Amplifiers AC18v DIY Kit Finished Prodcut For Preamp | Электронные

Vacuum Tube Amplifier Board 25W 6J1+LM1875 Electronic Valve Amplifiers AC18v DIY Kit Finished Prodcut For Preamp | Электронные

Vacuum Tube Amplifier Board 25W 6J1+LM1875 Electronic Valve Amplifiers AC18v DIY Kit Finished Prodcut For Preamp

Description:

1: Widely used

2: 6J1 school sound, soft and sweet sound

3: 2-channel stereo

4: Overheating DC short circuit protection

5: Simple to use and easy to understand

Configuration details parameters:

Power supply voltage: AC12-18VX2 (double AC)

Power supply: not less than 30W and above 50W is better

Output power: 30WX 2 MAX.

Output impedance: 4-16 ohms

Channel: 2 channel stereo

Circuit architecture: 6J1 front stage + LM1875 rear stage

Features: 6J1 school sound, soft and sweet sound

Protection feature: overheating DC short circuit protection

Size: Approximately 125*120*55mm

Net weight: about 393.5g

Important hint:

1. The power depends on the power supply and speaker impedance, THD=1%, RL = 8Ω, VS = ±25V, Po=25W;

2. LM1875 has been discontinued, using the old stock white genuine 1875; 6J1 tube has also been discontinued, using stock products, the brand may be shipped randomly from brands such as Shanghai, Beijing, and Shuguang;

3. Please pay attention to monitor the temperature of the heat sink during use, if necessary, it is recommended to use a fan to assist heat dissipation;

4. The design size is for reference only, and there is a deviation from the actual product, please refer to the actual product.

It is recommended to use dual 18V transformers for the power amplifier board, if dual 12V is used

Transformer, please short the jumper point on the back of the circuit board.

Packing included:

1*Power amplifier finished kit