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Evolution Amplifier Operation
The Evolution amplifiers are easy to operate.
IMPORTANT
When powering up any system, turn the amplifier on last. When powering down, turn
it off first. This will prevent any turn-on and turn-off thumps in your loudspeakers.
Always mute or fully attenuate the preamplifier level when switching sources. Do not
change input connections to the amplifier when the amplifier is on.
Krell amplifiers have large reserves of clean power that can safely drive loudspeakers
to higher sound pressure levels than other amplifiers. Use care when setting high play-
back levels, and lower the volume level at the first sign of loudspeaker distress.
On/Off and Stand-by Operation
1. Move the back panel power breaker switch (10) to the up position to place the
amplifier in stand-by mode. The power status indicator (2) illuminates in red.
2. Press the silver power button (1) on the amplifier front panel. The power status
indicator (2) illuminates in blue.
The initial power-up phase lasts approximately 30 seconds from the moment
the back panel power breaker switch is placed in the up position. If the power
button is pressed during this period, the power status indicator flashes blue for
the remainder of the initial power-up phase. When the initial power-up phase is
complete, the power indicator illuminates in blue and is no longer flashing. The
amplifier is in the operational mode.
3. With the preamplifier muted or its volume completely lowered, select a source.
4. Increase the volume control to the desired listening level.
5. T
o r
etur
n the amplifier to stand-by
, pr
ess the power button on the fr
ont panel.
The power status indicator tur
ns r
ed, and the amplifier is in the stand-by
mode.
It is now safe to place the r
est of the system in stand-by
.
Powering Off
Krell recommends leaving Evolution amplifiers in the stand-by mode between lis-
tening sessions. Turn the amplifier off using the power breaker switch (10), and
disconnect the amplifier from AC power when the system is not being used for an
extended period of time.
SECTION FIVE