Balanced Audio REX II Power - Manual (Page 11)

Replacing Output Tubes:
In order to replace the 6C33C-B output tubes, please contact the factory
and supply them with the unique identification number stamped on the
side of the tube needing replacement. This information will be used by
Balanced Audio Technology to provide an optimal replacement tube for
your amplifier.
Please do not substitute any random tube as a replacement.
Although the automatic bias circuit in the REX II Power will accept virtually
any random set of output tubes, the unit will not be guaranteed to meet
all of its performance specifications under such conditions.
Finally, the determination that a single tube replacement is prudent
rests solely with the customer, based on actual hours of use for the
particular set of tubes. The factory assumes no responsibility for any
performance decrease under such conditions.
Servicing:
The Balanced Audio Technology REX II Power should require no service
other than tube replacement to maintain its high performance. Please
direct any further service inquiries to the factory.
Cleaning:
To remove dust, occasionally wipe the front and top surfaces of your REX
II POWER with a damp soft cloth. If fingerprints appear, you may use a
mild, non-alkaline soap solution. Do not use abrasive cleaners, as they
may damage the fine finish of the unit.