6
AMPLIFIER FEATURES
– FRONT PANEL
ABOVE:
SA-103 front panel layout
Power LeD
An LED in the centre of the front panel indicates the power is on. When first switched
on, the display will vary in brightness until the initialisation sequence is completed,
after which the LED remains lit.
MUTe SwITCH
It is not recommended practice to interfere with the input cables while the amplifier
is switched on and connected to the loudspeakers, so a Mute button is fitted to
interrupt the input signal. This allows you to connect and disconnect the input cables
without the necessity of turning the amplifier off.
When the amplifier powers up from start, it will automatically go into Mute and
disconnect the speaker outputs. In this mode the Mute LED is ON. Press the Mute
switch to take the unit out of Mute and begin listening.
CLASS A SwITCH
This switch on the right of the panel alters the operating bias of the amplifier. Press
once to activate Class A, and again for Class AB. In Class A the LED is ON. Either
mode may be used for listening, with Class A preferred.
CLASS AB: This position reduces the bias on the output stage to operate the
amplifier in Class AB. This is a bias configuration used by the majority of high
fidelity amplifiers. In Class AB your PLINIUS SA-103 produces very high quality sound,
suitable for all occasions where critical listening is not a priority. A dual benefit exists
