Parameters
Audio input: 1*3.5mm Jack
Audio output: 2*3.5mm headphone jack(one for 12-40Ω headphone and one for 40-200Ω headphone)
Power supply: DC 12V@2A(5.5/2.2mm)
Tube model: Beijing FU32
Op amp: NE5532
Color: black
Dimensions: (L)86 mm *(W)86 mm *(H)43 mm(Excluding the tube)
Net weight: 320g
Packing List
1*Headphone Amplifier
1*Power Supply
1*FU32 Tube
Noise may be resulted from:
1. Input signal overload may cause distortion and noise. When this happens, please turn down the volume of the audio source until no noise and then adjust proper volume through the amp itself.
2. Low-quality audio cables, poor audio source can cause the static noise.
3. The tubes not are plugged well on the tube sockets or the two red wires are not inserted to FU32 tube.
4. Devices like routers, mobile phones will also interfere in the audio signal and may cause static noise.