Owner`s manual
7
PHASE button and LED 
This button allows the user to invert the absolute polarity of the signal to compensate for some 
recordings that are made out-of-phase. The LED indicates whether the unit is in its INVERTING 
or NONINVERTING mode. This function is also accessible via the VK-R3 remote control. 
LED OFF    Non Inverting operation 
LED ON    Inverting operation 
MONO Button and LED 
The Mono button allows the user to switch the VK-51SE in Mono operation when the two channels 
are summed together. This may be useful, for example, while listening to old monophonic 
recordings. This function is also accessible via the VK-R3 remote control. 
LED OFF    Stereo operation 
LED ON    Mono operation 
MUTE Button and LED 
The Mute button disables the preamplifier output. It is recommended that the Mute be engaged any 
time the signal cables are changed or any other system configuration changes are being made. This 
function is also accessible via the VK-R3 remote control. 
LED OFF    Unit in Play mode 
LED ON    Output Muted 
INPUT selection buttons 1 through 5 
These allow the user to select any of five available inputs to be played. The selected input number 
together with its name will be indicated on the unit front panel display as well. This function is 
also accessible via the VK-R3 remote control. 
VOLUME Knob 
This knob performs different function depending upon the unit’s mode of operation. In normal 
mode it works as volume control knob. 
It is also used as a data input device in various Function modes to program the unit. For example, 
it is used to set the BALANCE adjustment when the VK-51SE is switched into its Balance mode. 
More on that in the corresponding sections of this manual. 
The volume control knob on the VK-51SE is linked to a digital encoder and is of a continuously 
rotating type (there are no stops). 










