Front and Rear Panel Description
See Figures 1 and 2 on page 5
Krell S-275
7
1 Power Button
Use this button to switch the S-275 between the stand-by and the
operational modes.
2 Stand-by Indicator
The red stand-by indicator illuminates when the S-275 is plugged
into a standard AC wall receptacle and the rear panel power but-
ton is pressed, indicating that the amplifier is in the stand-by mode
and ready to be switched to the operational mode. The indicator
turns blue when in operational mode
The S-275 back panel provides connections for all inputs and out-
puts, power on/off, and additional remote connections.
3 Mono/Stereo Switch
Set this switch to stereo when using the S-275 as a stereo power
amplifier. Set this switch to mono when using the S-275 as a sin-
gle monaural power amplifier.
4 Gain Switch
In stereo, the amplifier provides 19.8 dB of gain at 0d dB setting
and 25.8 dB of gain at +6 dB setting. In mono, the amplifier pro-
vides 25.8 dB and 31.8 dB of gain at the 0 dB and +6 dB settings,
respectively.
5 Input Switch
Set this switch for the style of connection being used,
balanced/XLR or single-ended/RCA.
6 Left and Right Balanced Analog Inputs
The S-275 is equipped with one pair of balanced inputs via XLR
connectors. Use the left input when in mono mode
7 Left and Right Single-Ended Analog Inputs
The S-275 is equipped with one pair of single-ended inputs via
RCA connectors. Use the left input when in mono mode.
Consult the owner’s reference of the components used in a custom
installation to take full advantage of the remote capability of the S-275.
14 Left and Right Loudspeaker Outputs
The S-275 is equipped with standard binding posts for each ampli-
fier channel. These connectors accept bare wire, pins, banana
