9
Definition of Terms
The following are definitions of key terms used in this owner’s reference:
Inputs and Outputs
Balanced
A symmetrical input or output circuit that has equal impedance from both input
terminals to a common ground reference point. The industry standard for professional and
sound recording installations, balanced connections have 6 dB more gain than single-
ended connections and allow the use of long interconnect cables. Balanced connections
are completely immune to induced noise from the system or the environment.
CAST and Evolution CAST
Krell Current Audio Signal Transmission, or CAST, is a proprietary Krell circuit technology
for connecting analog components, transmitting the audio waveform between components
in the current domain rather than in the voltage domain. The speed and bandwidth provided
by Krell CAST and its circuitry update, Evolution CAST, yield accurate, realistic music
reproduction, enabling connected components to perform as if they are all part of a single
circuit. CAST and Evolution CAST are balanced connections, and reject induced noise.
Single-ended
A two-wire input or output circuit. Single-ended connections are not recommended for
connections requiring long cable runs. Use care when using single-ended connections,
because the ground connection is made last and broken first. Turn the system off/on prior
to making or breaking single-ended connections.
Operation
Off
When the power status indicator is not illuminated, the amplifier is off.
Stand-by
A low-power-consumption status that keeps the audio and power supply circuits at idle. The
power status indicator illuminates in green. Green is the default standby color and indicates
an ultra low power draw of 2 watts. An optional red standby mode is available which keeps
the input and driver stages continuously powered. Krell recommends leaving the amplifier in
stand-by mode when it is not playing music.
Operation
When the power button is pressed, and the power status indicator is illuminated in blue, the
amplifier is in operational mode and ready to play music.
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