Chapter 4; Care And Maintenance Of Your Vtl Preamplifier; Break In Period; Tube Life - VTL TL6.5 Owner's Manual

C H A P T E R 4
Care and Maintenance of
your VTL preamplifier

Break In Period

Your VTL TL6.5 is a hybrid product designed to give you the continued optimum
performance over an extremely long time period. Initially the tubes and circuits will require
a burn-in period to reach maximum performance. During the first 100 hours of usage the
preamplifier will undergo several improvements in sound. To break in the TL6.5 you can
leave it on with a music source connected to it and playing with the volume control turned
to the 45 level. It is not necessary to have the power amplifier on during this break in
period, as the preamplifier will still pass the signal.

Tube Life

Your VTL preamplifier has been designed to ensure long tube life. Tube replacement need
not be considered until after approximately 5000 hours of use (roughly 4 to 5 years
depending on your listening requirements.) As the tubes age beyond their peak
performance there will be a general softening of the sound.
We recommend a complete replacement of both tubes in your preamplifier at that time,
which will restore it to a "like new" sound quality. The tubes used in your TL 6.5 Signature
Preamplifier are specially matched and tested for this preamplifier. Please contact your
VTL dealer or VTL factory service department to order the matched tubes for the
preamplifier.
Note: use only tube types and tube brands that are recommended by VTL. VTL
specified replacement tubes are available from your authorized VTL dealer or the VTL
factory service department. Any damage incurred to units which use non-VTL
approved tubes will not be covered under the warranty.

Changing Tubes

Do not attempt to change tubes yourself. Contact your authorized VTL dealer or the VTL
factory service department and have the service performed by a trained technician. You
will need to take the unit and this procedure to your dealer for them to perform this
procedure properly.
Notes to the Service technician:
TL6.5 Preamplifier Owner's Manual 41
VTL