6J1Bile Duct Power Board HiFi Vacuum Tube Audio Amp 2X25W 2.0 Channels DIY Electronic Valve 6J1+LM1875 sc

Fever grade 6J1 tube LM1875 power HIFI audio vacuum tube gallstone finished board product information 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 1875; 6J1 tube has also been discontinued, using stock products, the 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 for the power board, if dual 12V is used Transformer, please short the jumper point on the back of the circuit board. Checklist 1*Power finished kit

• 6J1Bile Duct Power Board HIFI Vacuum Tube Audio Amp 2X25W 2.0 Channels DIY Electronic Valve 6J1+LM1875 sc