Audio Note M5 RIAA Owner's Information page 4

Using the M5 RIAA
Once all the connections are completed and checked, make sure all power amplifiers
are off and flip the mains rocker switch located on the back panel of the pre-amplifier
to the 'on' position.
The M5 RIAA is a vacuum tube design and therefore requires about 45 seconds
warm-up time. After this the remaining system components may be turned on.
NOTE: Always turn the phono stage on before turning on the pre-amplifier and
always turn the pre-amplifier off before turning off the phono stage. This will prevent
any buzzing or popping sounds from occurring.
No further action is required, the M5 RIAA will act silently as a dedicated phono
stage, volume and balance adjustment etc. can be made on the line stage pre-
amplifier.
The M5 RIAA will improve over time and will start to sound increasingly well
balanced. This is because of the "bedding in" time taken by new electrical
components inside the unit. Also, the pre-amplifier's sound quality improves as the
unit reaches its normal, stable operating temperature. Only a rear panel on/off switch
is provided as the unit is designed for continuous operation. The M5 RIAA need not
be switched off each time after use. It is interesting to note that continuous operation
not only results in optimum sonic performance (since the unit is maintaining a
constant operating temperature) but also causes less electrical stress and so extends
component and valve life.
Cleaning
Cleaning the pre-amplifier is best done with a soft brush - some photographic stores
are able to provide suitable brushes. Alternatively, a soft cotton cloth may be used
with a mild propriety cleaner for removing dirt build-up. Strong or alcohol based
solvents may damage the finish of this product. Ensure the pre-amplifier is switched
off and cold when cleaning. Do not wet the unit.
Replacing and Upgrading the Valves
Replacement NOS valves can be purchased from Audio Note when valves fail or
should you wish to experiment with different types of valves. A list of valves and
equivalents can be found at www.audionote.co.uk. Contact your dealer if you are
unsure what valves you should use or how to install them.
Line and phono stage valves should provide you with 5 years of continuous operation,
rectifier valves should last much longer.