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| 1.NE5532 Preamplifier |
| 2.AA-type design to enlarge |
| 3.Independent acoustic chamber, the sound clear and bright |
| 1.Area:10~80m² (adjustable) |
| 2.Audio transmission distance:1000m |
| 3.Sensitivity:-45dB±3dB |
| 4.Impedance:600Ω |
| 5.Signal amplitude:0~6Vp-p |
| 6.Frequency range:100Hz~15KHz |
| 7.Power supply:DC9V~12V 20mA |
| 8.Dimension:74/47*21mm |