User's Manual
ESI  uniK plus
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When set to 0 (middle position), the whole frequency response is optimised, i.e. as linear as 
possible. Make sure that each speaker has exactly the same settings. 
7. low frequencies (room adjustment) – the LOW knob allows you to adjust the low frequencies 
via a built-in EQ mostly affecting the area around 100Hz and below, by around 1dB for each step 
up or down, according to local requirements and your taste. 
When set to 0 (middle position), the whole frequency response is optimised, i.e. as linear as 
possible. Make sure that each speaker has exactly the same settings. 
8. ground lift switch – with the ground lift switch you can lift the signal ground from earth (when 
set to ON) or by default keep it connected (when set to OFF). This allows you in some situation to 
reduce or remove unwanted hum noise when there are issues with grounding of your audio signals 
in your studio setup. 
9. standby switch – you can turn the standby functionality ON or OFF. When set to OFF, the 
standby energy saving functions are not available and the unit will always be turned on. When set to 
ON, the unit will switch to power saving mode after a while without any audio signal. The power 
saving mode is indicated by a red ESI logo LED on the front panel (instead of the normally orange 
power ESI logo LED). When there is an audio signal again, regular operation resumes. 
10. power switch – with the power switch you can turn uniK plus on and off. 
11. power port with ext. fuse – use this connector to plug in the detachable 3-circuit line cord that 
connects to the power outlet. The connector contains a replaceable fuse (T1AL/250V in case of 
uniK 05+ and T2AL/250V in case of uniK 08+). 










