Nobsound Bluetooth Vacuum Tube Power Amplifier Class D HiFi Digital Audio Amp 100W (50W×2) (Black)

Troubleshooting:
Some customers may find the Bluetooth can't be connected or found. Here is the solution.
1. Power off the M8 and your phone.
2. Wait for 5s and then power on both.
3. If it still can't be discovered, repeat 1 and 2 and it should work.
If the problem can't be solved, please contact us

Specifications:

• Tube: 6J2
• Amplifier Chip: TPA3116
• Rated output power: 2*30W /8Ω, 2*50W /4Ω
• Audio input: 1 set of RCA input; 1 * 3.5mm stereo input; 1 * Bluetooth input
• Audio output: 1 set of Banana Speaker Jacks
• Signal to noise ratio: ＞99dB
• Frequency: 50Hz-60Hz
• Dimensions: 16*11.5*7 cm (including tube height)
• Power supply: universal DC 19V 4.7A

Packing List:

• 1 * Power Amplifier
• 1 * Power supply
• 3 * 6J2 tube (one spare tube)
• 1 * Bluetooth antenna

Troubleshooting:

For noise issue:

• There is a large probability that the low-quality audio cable causes the static noise.
• Please make sure the sound source is fine since tube amplifiers will amplify all sound including the noise.
• Please check whether the tubes are plugged well on the tube sockets or not.
• Devices like routers, mobile phones will also interfere in the audio signal and may cause static noise.
• If your problem can't be solved, please feel free to contact us. We will be very glad to help you and try our best to make you satisfied.