User guide
13
Operation
Front Panel Control Functions
VOLUME CONTROL:   Pressing  the down or  up button decreases or 
increases the volume level. Note that the VSi75 has 103 individual steps 
across the volume control adjustment range. The corresponding level is 
indicated on the LCD display. 
INPUT:  Allows selection of any of ve single-ended input sources 1, 2, 3, 
4, and 5. Pressing the Input selector button steps through each input as 
indicated on the LCD display. 
POWER: Toggles power on and off from AC wall outlet to VSi75.
MUTE: Mute should always be activated between listening uses or before 
switching inputs, in addition to turning the Volume control down. These 
two simple precautions will prevent inadvertent misuse of your VSi75 and 
help protect the amplier and speakers from unexpected transient signal 
pulses. In “operate” position (indicated on the LCD display), the signal 
passes normally to the outputs.
BIAS: Puts the VSi75 into bias mode for adjusting vacuum tube bias (see 
page 15 for further details on adjusting bias).










