Hughes & Kettner
Stereo Tube Power Amplifier
Congratulations!
You have just acquired a highquality sound tool which combines the sonic superiority of
vacuum tubes with the optimum usefulenss of a guitar rack. The VS 250 incorporates the
sum of our experience with vacuum tubes. May you enjoy the new measure of expressiveness
and creative freedom it affords.
The following operating instructions delve into the special features and capabilities of the
VS 250 in detail.
The
Hughes & Kettner VS 250 is
a twochannel tube power amplifier. As with all tube
devices, there are a few things you should pay special attention to:
Tubes require a specific operating temperature. For this reason a tube device needs a
moment after power-up (depending on the operating environment about 20 seconds or
SO
)
until it is completely ready for operation.
Tubes are sensitive to being jostled or shaken when hot. After use, allow the unit to cool
down for a few minutes before transporting it. Avoid subjecting it to strong vibrations while in
operation.
A tube amplifier should never be operated without a load (speaker) connected to it.
Tubes produce heat. Make sure that the vents in the front and back of the unit remain
unobstructed.
CONTROLS
The
VS 250
has two independent channels, identical to each other. The controls for each
channel are likewise identical; so what is said below about channel A also holds true for
channel B.