REPLACEMENT OF TUBES
The line stage tubes are type 8416.
The phono stage tubes are type 12AX7, also known as 12AX7A, 7025, CV4004, ECC83,
and E83CC. Do not use the 5751, which some suppliers may suggest.
We recommend that you use only tubes specifically selected and tested by VAC for this
preamplifier.
DANGEROUS VOLTAGES EXIST WITH THIS COMPONENT. YOU MUST FOLLOW THESE STEPS
TO PROTECT YOUR SAFETY.
Before replacing tubes, all power must be turned off. Unplug
the power cord from the wall, and remove all audio interconnect cables. Wait 30 minutes
before removing the top cover. Install new tubes of the appropriate types firmly in their
sockets, noting the location of holes in the socket and pins of the tubes, taking care to
make sure that pin pattern corresponds to holes in tube socket. Reinstall the top cover
before reconnecting the unit.
NEVER INSTALL OR OPERATE THIS UNIT WITHOUT ALL COVERS IN PLACE.
In the event that trouble is encountered, check all signal, speaker and power connections.
If the problem persists, follow all safety precautions stated earlier in this section, and check
that all tubes are correctly seated in their sockets. If possible, try another tube. If the
problem persists, please consult your VAC dealer or contact the factory directly.
CARE OF CHASSIS
VAC chassis are machined aluminum for superior electromagnetic performance, and finished
in durable textured gloss paint. Cleaning with a damp cloth WHILE THE AMP IS SWITCHED
OFF AND UNPLUGGED should suffice. Do not get cleaning solutions onto or into the
connectors or controls.
When shipping your unit, be certain to wrap the amplifier in the cloth, tissue or plastic wrap
in which it was originally packaged. Given the high gloss of the lacquered finish, make sure
there are no ridges or sharp surfaces in those parts of the cloth which contact the faceplate.
Use of a coarser cloth or failure to otherwise protect the faceplate may result in damage to
the finish. VAC is not responsible for cosmetic damage resulting from improper care or
packing.
