wikimedia and pixabay.
It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
This image was acquired from
Keywords from Image Description:
Sennheiser wireless receivers rack by . sound equipment music volume electronics soundwaves Sound Equipment Music Volume Zadrien other versions Sound Equipment Music Volume INeverCry Uploaded with Sennheiser Wireless audio receivers Wireless audio systems Sound reinforcement Professional audio racks Music
Page 2017 Free-images.com. All images are Public Domain