KIMAFUN Wireless Microphone System – KM-U802A

The KIMAFUN Wireless Microphone System – KM-U802A is a compact wireless XLR transmitter and receiver system that has built-in +48v phantom power! The system promises to turn your wired microphone into a wireless option.

KIMAFUN mailed me this product for me to give an honest review and after using it for a few months, I wanted to give you my overview in case this is a product you are looking into.

XLR Plug wireless transmitters are helpful for me when tuning a PA system because I use an omnidirectional condenser measurement microphone. Rather than running a 50 ft XLR cable to the microphone over seats and through the aisles, I will use a plug-in XLR wireless unit. Using the wireless allows the microphone to be moved around a lot faster making the system tune take less time overall.

The U802A is a plug & play system that comes with a nice zipper carrying case to keep it safe when you are transporting. The unit  charges off of USB and comes with a cable to do so. It does not include a charging block, but any USB charging block will work for charging them.

Kimafun KM-U802A Wireless Frequencies

The great thing about the KIMAFUN Wireless Microphone System is that it doesn’t use the 2.4 GHz spectrum which is always very crowded with WiFi and other 2.4 GHz wireless products. The U802A utilizes the 900 MHz band, which can be crowded, however, it will be much less crowded than the 2.4 GHz band. The U802A has 16 selectable frequencies and they are:

  • 0: 902.000 MHz
  • 1: 902.600 MHz
  • 2: 903.200 MHz
  • 3: 903.800 MHz
  • 4: 904.400 MHz
  • 5: 905.000 MHz
  • 6: 905.600 MHz
  • 7: 906.200 MHz
  • 8: 906.800 MHz
  • 9: 907.400 MHz
  • A: 908.000 MHz
  • B: 908.600 MHz
  • C: 909.200 MHz
  • D: 909.800 MHz
  • E: 910.400 MHz
  • F: 911.000 MHz

I also pulled out my RF spectrum analyzer to see what the RF looked like:

Removable Antenna:

The Kimafun U802A on both the transmitter and the receiver comes with a removable antenna. When putting this antenna on it extends the distance it can transmit, which is a huge benefit over other models that are out there.

Phantom Power (+48v)

The biggest pro the KIMAFUN Wireless Microphone System has is that the transmitter can supply +48v phantom power to any microphones that require it.

There is a blue LED light with a +48V label to show you when the phantom power is turned on.

Limitations of Kimafun U802A

The downside of this unit is that the audio spectrum is limited. Below is a test that I performed via Smaart to test the audio bandwidth of the unit:

As we can see, there is a high-pass filter built into the transmitter that is at -3 dB at 65 Hz and looks to be around -6 dB/Oct meaning that at 20 Hz there is a -14 dB loss.

This would be a great EQ curve for a vocal microphone. If your main purpose of using this microphone is to have a wireless vocal microphone, the Kimafun U802A would be perfect for you.

I wanted to use this product for making my RTA measurement microphone a wireless setup for tuning via Rational Acoustics Smaart. They do not promise to have this capability so I was hoping to use this product for something other than it’s intended use. In this situation, the EQ curve really impacts the measurements I would make.

Variable Latency

The other portion of this wireless unit is that there is a varying latency that I measured which slowly and constantly changes between 2.21 ms and 2.5 ms. This makes the wireless unit unreliable for measurements of PA systems with Rational Acoustics Smaart.

Final Thoughts

This is a very cool wireless XLR unit that would be perfect for use on a vocal microphone that you are not needing to have subwoofer frequencies on. Because of the low frequency roll off, anything below 100 Hz would not come through the wireless system like it would with a direct wired connection.

To learn more or purchase the Kimafun U802A you can visit Amazon.