Audio Note Oto Line PP - Manual (Page 8)

Once all the connections are completed and checked, ensure that the volume control
is at the minimum setting (rotated all the way left).
Turn on the amplifier by using the rocker switch located on rear panel, above the IEC
mains inlet socket..
The red front panel light should now be lit. The amplifier requires approximately 45
seconds to initialize before it is ready for operation.
Input Selector
Turn the selector to the source you wish to listen to.
Source / Tape
This allows you to switch between the selected source input
and the output of your recording device.
Volume Control
This control adjusts the listening level, or loudness. Set as
desired!
Balance Control
This control adjusts the relative left/right levels. Use this control
if necessary to equalize the loudness from each speaker.
Bedding in
The new amplifier requires about 200 hours of initial use (called
“bedding in”) before the circuitry becomes stable and optimum
performance is realized.
As the amplifier “beds in” the sound will become increasingly
smoother, detailed and open.
Once the amplifier has “bedded in” a warm up time of
approximately 30 to 45 minutes is required each time the
amplifier is switched on before optimum sonic performance is
reached.
Cleaning
No special maintenance is required for the amplifier. Use a
soft, clean lint free cloth to remove any surface marks from the
casework. For finger marks / grease, use a soft, clean lint free
cloth, lightly moistened with a solution of warm water and mild
detergent. Do not use any alcohol or solvent based cleaning
products, as they may damage the finish of the amplifier.
ENSURE THAT THE AMPLIFIER IS SWITCHED OFF AND
DISCONNECTED
FROM THE MAINS ELECTRICITY
SUPPLY BEFORE UNDERTAKING ANY CLEANING.
Valve Life
The valves supplied with your amplifier should provide
approximately 8000 hours of operation. They are specially
selected by us, and should only be replaced with matched
pairs. Please consult your Audio Note (UK) dealer should your
valves need replacing.
OPERATION