EverFocus EN-75080C Instruction Manual page 14

3. Mute
1) Press the up(▲) or down(▼) button to select the Mute.
2) Press the right(▶) or INPUT button.
3) Press the up(▲) or down(▼) button to select the On or Off.
4) Press the MENU button to save.
4. Volume
1) Press the up(▲) or down(▼) button to select the Volume
2) Press the left(◀) or right(▶) button to adjust Volume setting.
3) Press the MENU button to save.