35OPERATIONdecreasing one and increasing the other by the same amount –using the Audio Adjustments submenu. This achieves the sameeffect as using a balance control.HeadphonesPlug the 1/8" plug on a pair of headphones into the headphone jackon the right side of the HS 300 for private listening.Figure 54 – Headphone JackThe HS 300 cannot accommodate a 1/4” headphone plug withoutan adapter (not included). Using the headphones output mutes thespeakers.Source SelectionMost of the time you may find it convenient to select a source bypressing its Source Selector on the remote. See Figure 51.Pressing a Source Selector not only selects that source as the HS 300’sinput, but also turns on the HS 300 if it is in Standby mode, and switchesthe remote to the mode that operates the source.NOTE: Press the Mode button on the remote to switch it tooperate another device without changing the source selectionfor the HS 300. See Figure 55.Figure 55 – Mode Button on RemoteWhen the source is selected, the HS 300 will make the followingselections as appropriate to the source:1. For the TV and D-IN sources, the HS 300 will select the correctanalog or digital audio input. See Step Six of the Initial Setupsection for more information on configuring the audio input.2. For all sources, the HS 300 will select the correct audio, orsurround sound, mode. The Audio Mode setting is adjusted usingthe Source submenu for the RADIO, TV, AUX and D-IN sources.The adjustment is called DVD Sound Mode for the Disc Player, andis adjusted using the System Audio Setup submenu. There is nosurround sound processing available for materials on USB devices,and they are always played in their original formats.3. For the TV, AUX and D-IN sources, the HS 300 will adjust the audiolevel (volume) for that source only, based on the setting in theSource submenu.NOTE: Pressing the Open/Close button always causes theHS 300 to select the Disc Player as the source.The following sections describe the operation of the internal disc playerand tuner, as well as the other sources.