Adjust audio gain and delay

Pearl Mini does not introduce audio delay and has near-zero latency when capturing. However, other external factors can cause audio to become de-synchronized, such as the length of audio cables or the configuration of your equipment. The audio delay feature helps you adjust audio coming from external sources so that your video and audio sources are synchronized when captured, streamed, and recorded.

You can apply from -300 ms to +300 ms of delay to any audio source using the Admin panel . By default, there's 0 ms of delay applied to audio sources.

Adjusting the Input Gain for an analog audio source affects the volume for that audio source in recordings, streamed output, video output ports, and in the headphone jack. Be aware that excessive amounts of gain can increase the perception of any noise that may be present in the audio signal.

If the gain of your analog audio signal needs adjustment, connect your headphones and use the VU meters to monitor the audio level while you add some gain. As a rule, each 10 dB of gain doubles the perceived loudness of the audio signal.

This table offers some guidelines for adjusting the gain at the audio input port of Pearl Mini for common types of audio input devices. You should add the suggested gain to the audio input to get an average signal to register at a nominal level in the VU meter (i.e. where the green bars change to yellow). The actual amount of gain needed depends on the strength of the original audio signal.

Audio input port gain guidelines

Audio source	Input port	Gain
Dynamic microphone	XLR	Add +50 to +60 dB gain to the audio input port.
Electret microphone	XLR	Add +18 to +40 dB gain to the audio input port.
	3.5 mm	Add +6 to +12 dB gain to the audio input port.
Wireless microphone receiver	XLR	Add +18 to +40 dB gain to the audio input port.
	3.5 mm	Add +6 to +12 dB gain to the audio input port.
Condenser microphone with phantom power	XLR	Add +40 to +60 dB gain to the audio input port.
Mobile phone or other consumer line level device	TRS	Add +6 to +12 dB gain to the audio input port.
	XLR	Add +6 to +12 dB gain to the audio input port.
	RCA1	Nominal
Professional mixer	TRS	Nominal
	XLR	Nominal
	RCA	Not recommended.

¹ To avoid unwanted signal noise on the RCA ports, we recommend adding no more than 12dB of gain to the RCA ports or when RCA/3.5 mm is used, see Assign audio sources to an input.

Ensure the audio input source is connected to an analog audio input port on Pearl Mini before proceeding.