NO. The receiver has a built-in Lithium battery which can run for 17h after one charge. So it can power itself. 

To make the Virso S more compatible. Sony players can use the hot-shoe connection directly, while other users can also use Virso S for their camera via the 3.5mm jack. 

Analog signal.

It’s 48kHz/16bit. Meanwhile, users can also improve the sound quality through the noise reduction function. 

By twisting and pressing the dial! 

Short press the menu button, select to enter the volume interface, twist and press the dial to select Group A or B, then, twist it to adjust the volume separately. Finally, short press to confirm. 

Since the Virso S M2 is equipped with 3 built-in microphones in both the TX and RX. The sound effects of RX will be significantly improved when using a hot shoe connection. Therefore, to make it equal, we need to turn up the gain adjustment of the TXs. 

Because the camera has AGC, it would automatically amplify or reduce its sound to match the recording. we advise you to set the volume of the receiver at 10-15. Also, don’t forget to turn down the volume of the camera first. 

Enter the camera's menu page, open the recording volume settings, and reduce the recording volume as much as possible. Enter the receiver's menu page, and increase the receiver volume as much as possible. This improves the signal-to-noise ratio and reduces background noise. (Adjust according to equipment and site conditions).

Enter the camera menu page, open the camera volume settings, and increase the volume appropriately.

Reduce the receiver's recording level.

First, turn on the camera, connect Virso S to the hot shoe while it's turned off, then turn on Virso S.

Some Android phones' built-in cameras do not support external microphone input. Therefore, it is best to use other apps for video recording (like TikTok, Kuaishou, etc.). The adapter must be a genuine original, otherwise, there will be various issues such as incorrect sound and failure to record. 

When connecting to a computer, it is recommended to use an external sound card to better avoid the appearance of current noise; for a sound card with dual 3.5mm ports, use a TRS-TRS (double ring) cable, which is not directional, and connect one end to the camera port of the receiver and the other end to the microphone (MIC) port of the sound card, then connect the sound card to the computer via USB; for a sound card with a single 3.5mm port, use a TRS-TRRS cable, with the TRS (double ring) end connected to the camera port of the receiver and the TRRS (triple ring) port connected to the sound card's 3.5mm port; then enter the computer's sound settings page (located at the lower right corner of the computer screen), after entering, you can see the computer's audio input and output, ensure that the input is correct, which is shown as the sound card's input port (you can test the microphone signal by clicking on 'test microphone' below the input), usually, no settings are required, as the computer will automatically recognize it. After confirming that the input and output arecorrect, enter the live streaming software, find the audio settings in the software, and check the audio input and output options. Ensure that the input and output are consistent with the computer's audio input and output. Please note when using computer live streaming: when testing the sound quality in the live room with your phone, you must wear headphones, do not turn on the speaker, otherwise, there will be a lot of noise in the live room; some live rooms use webcams instead of cameras for image capture, some webcams have a sound pick-up function, so in this case, you need to make sure that the computer's audio is captured through the sound card, not the webcam.

This is a special case, where the computer itself cannot read any external microphone devices. In this situation, you can directly enter the live streaming software, start the live stream, and speak into the external microphone. If the microphone level icon in the live streaming software fluctuates, it indicates that the audio signal is being effectively transmitted, and you should be able to use it normally.

The recording format is WAV. Each trigger of the recording function is one file. By default, each file is 30 minutes long. If less than 30 minutes, it will be stored as 30 minutes. If more than 30 minutes, it will automatically switch to the next file for storage. A maximum of 100 sub-file names are supported under one main file name, and a maximum of 256 main files can be stored, totaling 128h. With a larger memory card, the cumulative recording time can reach 400h. Once more than 256 files are reached, it will automatically overwrite from the first file. The recording is stored in multiples of 30 minutes from the start to the end of the recording.

After connecting to the computer with the red port Type-C cable, press the power/mute button briefly. The computer recognizes the storage function, reads the USB drive, opens the USB drive, and the "RECORD" folder in the USB drive is the recording folder. The "RECINFO" TXT format document is the recording file. You cannot record while the USB drive is open, and likewise, you cannot open the USB drive while recording is in progress.