User Manual Q&AAnswer
Jan 08, 2025 - 12:09 AM
To install the vacuum tubes in the HM650 music player, follow these steps:
1. Open the package box and carefully remove the amplifier and power cable.
2. Place the device on a stable surface and remove the protective film from the top panel.
3. Open the box containing the vacuum tubes, headphone stand, and headphone (packed separately).
4. Take out the tubes carefully and arrange them in order according to the markings on them.
5. The tubes have been marked A1~A4 (6SN7). Insert each tube into the corresponding tube socket on the amplifier. Make sure the base of the 6SN7 tube is inserted precisely into the tube socket.
6. Grasp the tube base and gently insert it into the tube socket until it reaches the bottom of the socket.
Note: Vacuum tube matching has been carried out during manufacturing for optimum working status. Please use the tubes in accordance with their numbers for convenience during installation.
For more detailed instructions and illustrations, please refer to the "Installation of Vacuum Tubes" section in the user manual provided with the product.
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