Hi, Last night I finally got around to setting up our 1713 amp. the setup went well using the mic, and all speakers seem to be performing. So far I have only connected sky but I dont seem to be getting Dolby digital. The display just shows STEREO. The sky box is connected using HDMI & an optical lead. I presume somwhere in the settings I have to tell it to use optical for audio on this connection..... but I cannot find the settings. Does anyone know how to do it? Whilst testing, I also pressed a button on the remote to change the sound effect. The button is MUSIC, which changed the sound....quite nice I suppose but the problem is I cannot seem to turn it off. there are four buttons for different sound effects, but no way to turn the effect off once you have pressed one of the 4. Ive even tried turning the amp off. Does anyone know how to turn OFF the effects? Many thanks for any help.