• The unit has been built by Hughes & Kettner in accordance with IEC 65 and left the

factory in safe working order. To maintain this condition and ensure non-risk operati-

on, the user must follow the advice and warning comments found in the operating

instructions. The unit conforms to Protection Class 1 (protectively earthed).

• HUGHES & KETTNER ONLY GUARANTEE THE SAFETY, RELIABILITY AND EFFICIEN-

• Assembly, extension, re-adjustment, modifications or repairs are carried out by Hughes

& Kettner or by persons authorized to do so.

• If it is necessary to open the unit this must be isolated from all power sources. Please

take this into account before carrying out adjustments, maintenance, repairs and befo-

re replacing parts.

• Adjustment, maintenance and repairs carried out when the unit has been opened and

is still live may only be performed by specialist personnel who are authorized by the

manufacturer (in accordance with VBG 4) and who are aware of the associated

• It is not permitted to use repaired fuses or to short-circuit the fuse holder.

• Never interrupt the protective conductor connection.

• Surfaces which are equipped with the „HOT“ mark (Diagram 2, below), rear panels or

covers with cooling slits, cooling bodies and their covers, as well as tubes and their

covers are purposely designed to dissipate high temperatures and should therefore not

avoid the direct vicinity of loudspeakers operating at high levels. Wear hearing protec-

tion if continuously exposed to high levels.

• Avoid connection to the mains supply in distributor boxes together with several other

• The plug socket for the power supply must be positioned near the unit and must be

• The unit should stand only on a clean, horizontal working surface.

• The unit must not be exposed to vibrations during operation.

• Keep away from moisture and dust where possible.

• Do not place the unit near water, baths, wash basins, kitchen sinks, wet areas, swim-

• Keep away from direct sunlight and the immediate vicinity of heating elements and

radiant heaters or similar devices.

• If the unit is suddenly moved from a cold to a warm location, condensation can form

inside it. This must be taken into account particularly in the case of tube units. Before

switching on, wait until the unit has reached room temperature.

• Accessories: Do not place the unit on an unsteady trolley, stand, tripod, base or table.

If the unit falls down, it can cause personal injury and itself become damaged. Use the

unit only with the trolley, rack stand, tripod or base recommended by the manufactu-

rer or purchased together with the unit. When setting the unit up, all the manufactu-

rer’s instructions must be followed and the setup accessories recommended by the

the mains plug should be disconnected. This prevents the unit being damaged by light-

ning and power surges in the AC mains supply.