This manual introduces the features and characteristics of the HT-Z320 HT-TZ322 HT-TZ325 HT-Z420 HT-TZ422 HT-TZ425 home theater system, such as supporting multiple disc playback, USB host playback function, Dolby Professional Logic II, DTS, TV screen protection function, power saving function, personalized TV screen display, Anynet+ (HDMI-CEC) function, Bluetooth function, audio and video synchronization function, etc.