Care of your amplifier and guarantee conditions
A WORD ABOUT VALVES:
Valves need to reach a certain operating temperature. They need a few seconds after the
power has been switched on to warm up before they will work.
Valves are sensitive to shock. Once you have switched the amplifier off, give it a few
minutes to cool down before transporting it.
The sound characteristics of valves will also tend to change with time. Occasionally, they
will need replacing. The ECC 83 valves used in the ATS 120 are some of the most
commonly used, and the most affordable. Generally speaking, a change of valves is only
necessary every few years.
Before opening the amplifier casing, ALWAYS remove the mains plug!
WHERE TO USE THE AMPLIFIER:
do not use the unit under the following conditions:
extremes of temperature or high humidity
poor ventilation or insufficient cooling
extreme vibrations or impacts
SERVICING AND REPAIRS:
If your amplifier suffers a failure or fault, refer the matter to your authorised Hughes &
Kettner dealer. Do not try to rectify the problem yourself; servicing and repairs are jobs
for experts. Please note: any interference with the amplifier by unauthorized persons or
workshops will render your guarantee invalid.
GUARANTEE CONDITIONS:
Every Hughes & Kettner product is accompanied by a warranty card showing its serial
number and a card showing proof of inspection.
