[. . . ] Dear Customer, we thank you for the confidence you prove in purchasing our product. It will match your high demands towards sound and manufacturing quality. Though it is understandable that you want to plug and play this product instantaneously, we encourage you to read this manual carefully before installation. It will help you in handling and operating this machine in your system and obtaining the best possible performance, even if it was installed by your dealer. [. . . ] Under no circumstances must batteries be short-circuited, taken apart or heated up. For environmental reasons, used batteries should be disposed of in accordance with local environmental regulations and not put with domestic waste. C) Put the compartment cover back on and close the battery compartment. B) If necessary, remove used batteries and insert new ones correctly as shown by the diagram in the battery compartment. changing/Inserting batteries: a) Open and remove the battery compartment lid of the remote control by tugging sharply on the fishplate on the edge of the remote control. The battery compartment lid is held in place magnetically, there is no need to loosen the screws!MUTE Pressing this button once cuts the signals at the outputs "OUTPUT" (12) and "OUTPUT REC" (11) so that the system's loudspeakers are muted. Input selector buttons Select the input source you want to listen to with these buttons. Connect the power cable between device and power supply only after all other connections have been made. DURING INSTALLATION PLEASE OBSERVE THE FOLLOWING ADVICE: Protective caps Prior to the first installation the protective plastic caps must be removed from all the connections used at the rear of the unit. Inadequate connections can cause noise interference, failures and malfunctions. Make sure that you do not get these connections confused during installation!To make the most of the components' sound potential, only high quality loudspeakers and connecting cables, for example Vincent cables, should be used. Make sure that you do not mix up the analogue connectors for right and left. The RCA plugs for these are mostly colour coded as follows: red for the right channel, black or white for the left channel. Contacting the middle pin of the RCA plugs with the outer ring of the RCA chassis jack may lead to damages to the main amplifier if it is switched on!To avoid this hazard, connect or disconnect only in switchedoff state and more than one minute after deactivating!You can connect up to six devices with analogue RCA stereo high level output such as a CD player in order to provide the audio signals of your input sources to the system. the output sockets on the source equipment are usually indicated by "LINE OUT" , "AUDIO OUT" or "FRONT OUT". You will find information about ways to connect source equipment in their operating manuals. All six inputs represent electrically equivalent standard high level inputs with RCA connection. You can as well use both stereo outputs at the same time, giving way for up to 4 main amplifier channels to supply their loudspeaker. [. . . ] One of the audio settings of a connected DVD player (analogue/digital) has not been correctly selected. Main amplifier(s) has/have not been connected correctly to the preamplifier, is/are switched off or is/are faulty. The speaker cables are not properly connected to the main amplifier's terminals or are defective. Check the connection and ready status of the main amplifier(s) and whether it is/they are working. [. . . ]