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Audio Note COBRA - Operation Details and Maintenance; Amplifier Bedding-In Period; Cleaning and Care Instructions; Valve Lifespan and Replacement

Audio Note COBRA
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Bedding in The new amplifier requires roughly 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
more smooth, 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 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.

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