Audio Note Tomei Kensei - Manual (Page 13)

OPERATION
Once all the connections are completed and checked, ensure that the volume control
of your preamplifier / source is at the minimum setting.
Turn on all components in the signal chain before the TOMEI Kensei; the power
amplifier should always be the LAST component to be switched ON, and the FIRST
to be switched OFF.
Turn on the amplifier by using the rocker switch located at the top right of the rear
panel, just above mains inlet socket (viewing the amplifier form the rear).
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 “bed in” the sound will become increasingly
smoother, detailed and open.
Once the amplifiers have “bedded in” a warm up time of
approximately 30 to 45 minutes is required each time the
amplifiers are 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 amplifiers.
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 6000 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.