NAIM SUPERUNITI - Manual

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17SuperUniti Integrated Amplifier5 SuperUniti Integrated AmplifierSuperUniti incorporates a high performance integrated preamplifier and power amplifierbased on established Naim design principles. The preamplifier is able to handle bothanalogue and digital audio signals and, in addition to SuperUniti’s multi-format radio,network interface and USB/iPod interface it has four external analogue and six externaldigital inputs.Using the SuperUniti amplifier is simply a matter of selecting the desired input and settingthe listening volume level.5.1 Selecting InputsInputs can be selected by pressing the front panel inputbutton or one of the handset input selection keys.Note: The handset up (5) and down (6) keys or frontpanel up (5) and down (6) buttons will also scroll throughand select inputs if this navigation key action has beenconfigured. See Section 4.10.Note: The front panel input is automatically selected assoon as a plug is inserted.Pressing the front panel input button scrolls through andselects the inputs in the following order:Analogue 1, Analogue 2, Analogue 3, Digital 1, Digital 2,Digital 3, Digital 4, Digital 5, FM (radio), DAB (radio), iRadio,UPnP™ (Network UPnP™), USB/iPod, Front (front panelanalogue/digital).Note: These are the default input names. They may bealtered within the SuperUniti set up menus. See Section 4.3.Inputs can also be disabled so that they are hidden fromselection.Pressing one of the handset input selection keys eitherdirectly selects a single input or scrolls through a groupof inputs. For example, by default, pressing the PC inputselection key selects the UPnP™ input, while pressing theCD input selection key scrolls through a group comprisingthe Analogue 1 and Digital 1 inputs.Note: The default input selection key assignments may bealtered within the SuperUniti set up menus. See Section4.10.2.Selecting an input will route that input’s audio signal to theSuperUniti outputs.SuperUniti will momentarily display input names as they areselected before displaying input specific information; iPodtrack or radio preset for example.If an input is not operational (for example, no USB memorystick is attached) when selected, SuperUniti will display adescriptive alert message.5.2 Volume ControlSuperUniti volume control is achieved by using frontpanel volume control or the handset vol– and vol+ keys.The volume control affects the speaker, headphone,subwoofer and preamplifier outputs.The mute function silences the SuperUniti speaker,headphone, subwoofer and preamplifier outputs and isengaged or disengaged by touching the front panel logoor pressing the handset mute key. Mute is indicated by thedisplay volume icon flashing.Note: Logo-touch muting can be disabled. See Section 4.85.3 Amplifier DisplayIn normal operation the SuperUniti front panel displayprimarily shows information relating to the selected input. Itwill change temporarily to show amplifier adjustments suchas volume level and signal mute state as these are made.5.4 Signal OutputsIn addition to its speaker outputs the SuperUniti integratedamplifier provides a preamplifier output, a subwooferoutput, a digital output and a headphone output.The preamplifier output is designed to enable anupgrade or additional power amplifier to be connected.The subwoofer output is designed to enable an activesubwoofer to be connected. The appropriate outputconfiguration must be selected through the Speakers setupmenu. See Section 4.4.The digital output enables SuperUniti sources to beconnected to an external digital to analogue converteror preamplifier with digital inputs. External analoguesources (front Analogue and rear Analogue inputs) are notavailable via the Digital Output. The digital output signalformat can be configured via the Digital Output setupmenu. See Section 4.7Note: Although the SuperUniti FM radio is fundamentally ananalogue source, the multi-mode radio module digitisesFM signals to make them available via the digital output.The SuperUniti headphone amplifier is able to drivemost commonly available headphones. Insertion of aheadphone plug will mute all other SuperUniti outputs.5.5 Amplifier Fault WarningsIn the unlikely event that the SuperUniti power amplifier isoverloaded, exceeds its normal operating temperature ormalfunctions, its outputs will mute and the display will showa warning message.