The device has a built-in silicon label and can be used without a microphone.
The lever can be used to switch display modes, and the encoder can be used to control sound effects.
When used as a sound effect processor, the device must be powered independently, such as a 220v USB charger or a dedicated 12v input, otherwise it introduce display crosstalk.
Made of high-quality materials.
Easy to use.

Input voltage:USB5V/DC7-24v
Input power:1W
Frequency response:50Hz-20kHz
Sensitivity: 40db (@1kHz)
Channel:dual channel/mono switchable
Input interface:3.5mm unbalanced/XH2.54-3P

Sampling rate:48KHz
Input gain adjustment range:-6-+42db
Output gain adjustment range:-52-+12db
AGC adjustment rate:-3db-27db
Pitch range:-8-+8 degrees
EQ frequency:logarithmic 15 bands
EQ data group:6 presets + 10 personal settings
Colour:As Shown
Material:Plastic

Package Contents:
1 * Audio Spectrum Analyzer