Filter
Top Products
Do not use this amplifier near water including near a bathtub,
swimming pool or hot tub.
This unit should be installed so that its location does not
interfere with proper ventilation. For example, don’t place the
amplifier on a bed, sofa, rug, or similar surface that may block
the ventilation openings; or place in a built-in installation such
as a bookcase or cabinet that may block the flow of air through
its ventilation openings.
The unit should be set away from heat sources such as
radiators, heat vents, or other devices (including amplifiers)
that produce heat.
The unit should be connected to a power supply outlet only of
the voltage and frequency marked on its rear panel.
The power supply cord of the unit should be unplugged from the
wall outlet when it is to be unused for a long period of time.
Care should be taken so that objects to not fall, and liquids are
not spilled, into the enclosure through any openings.
The unit should be serviced by qualified service personnel when:
• The power cord or plug has been damaged; or objects
have fallen, or liquid has been spilled into the unit.
• The unit has been exposed to rain, or liquids of any kind;
or the unit does not appear to operate normally, or
exhibits a marked change in performance.
• The amplifier has been dropped, or the enclosure
damaged.
To prevent electric shock, do not use the polarized plug with an
extension cord, receptacle or other outlet unless the blades can
be fully inserted to prevent blade exposure.
Introduction:
Thank you for your purchase of a Knoll 21K
stereo power amplifier and congratulations on your choice. This
amplifier is specifically designed to be the best sounding
amplifier available anywhere. Our engineers and designers
spent years of pain staking research and testing to perfect the
sound quality. We hope you will appreciate this effort and enjoy
the amp.
Unpacking:
The carton and packing materials used in shipping
your new amplifier were specially designed to protect it from the
shock and vibration of shipping. We suggest that you save the
carton and packing materials to use if you move, or if the unit
ever needs to be shipped back to us for any reason. Should you
discover that your amplifier has been damaged during shipping,
please contact your dealer or Knoll immediately and request the
name of the carrier so a written claim can be made.
The right to a claim against a public carrier can be forfeited if the
carrier is not notified immediately in writing and if the shipping
carton and packing materials are not available for inspection by the
carrier. Save all packing materials until the claim is settled.
Placement
During normal home operation the amplifier will become warm.
However, there are instances during high-level playback into
low impedance speakers when the amplifier will become much
warmer than normal. To ensure the amplifier’s trouble-free
operation, it is necessary to provide adequate ventilation. Your
amplifier should be kept away from external sources of heat
such as radiators and hot- air ducts. The amplifier should never
be placed with other heat-producing components in a cabinet or
enclosure lacking free airflow. Do not stack other components
on top of your amplifier.
Rack mounting
A rack mount version of the 21K is available. For best operation
when rack mounting the 21k we suggest it be near the top of
the rack and have vented blank 1 rack space panels above and
below the 21k. For multiple 21k amps in one rack we suggest
spacing the amps 1 rack space apart and inserting a vented
blank 1-rack space panel between each amp.