A:AnswerHello, thank you for your message. In regards to your question, you can adjust parameters in the settings of the unit. Press MENU to turn on the menu on the front panel display, Press BACK/ (select)/ENTER repeatedly to select the item and press ENTER to decide the setting, and then Press MENU to turn off the menu. For more information, check the operating instructions: https://docs.sony.com/release/HTCT380_CT780_EN_FR.pdf . - Oscar.