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Do not connect the song to the turntable with antique furnishings. Most of them do not have a turntable ground wire and a turnhead amplifier inside. There are also special turntables without turntable ground wire and carbon core stylus in the previous combination stereo....

Default with 5V regulator and 5V relay, single 8-18 AC input, if you need 12V, please leave a message Friendly reminder: 1. The kit needs to be welded by itself. If it is welded on behalf of others, add 10 yuan. 2. The price...

The product does not contain a power supply, you need to buy it separately or bring your own power supply. The power supply matched with the board is very critical. The higher the voltage, the greater the current, and the more output power. If...

  This kit does not contain tubes and output transformers. You need to contact customer service for the finished board to change the price. The production difficulty is simpler than that of ordinary discrete power amplifiers. The reason is very simple. You only need...

If you choose 225 yuan, the board kit is only the components on the board and does not contain tubes. The boards with both price options need to be welded by yourself. If you weld the finished board on behalf of you, add 55...

The only new stock on the whole network Panasonic original RSN3502 power amplifier thick film power amplifier board Adopt genuine brand new original RSN3502 chip, original box packaging. The power of the power amplifier board is 50WX2@4 euros, and the distortion is THD0.1%. Panasonic's...

The basic evaluation method of true and false LM1875: The real LM1875 can be put on AC22VX2, and the counterfeit will fry if it exceeds 18VX2. The real output is protected, and the output short circuit will not burn, and the counterfeit output short...