Pass Labs X2.2 User Manual

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X2.2 Owner’s Manual
control buttons, indicated by up arrows (^) and down (v) arrows.  
Above the volume controls are two vertical arrays of  4 LEDs each. 
This indicator is likely different from what you are  accustomed to. 
We think you will appreciate how easy it is to read from a distance. 
The left most LED array is decade and the right most array is range. 
Associated with the volume control is one additional light and a 
function control button labeled as “MUTE”.  In the very lowest 
volume setting there will be no output and the “Mute” indicator 
light will be lit. Immediately to the left of  the lit “MUTE” indicator 
the lowermost LED in the range column will also be lit.  None of  
the decade LED’s will be lit, at this time.  As you step the volume 
upward using the up (^) button additional LED’s in the range column 
will light and the mute LED will extinguish.  When you reach the top 
of   the range, the first decade LED will become illuminated, and the 
range LED will drop back to its lowest indicated setting.  And so it 
goes; think of  this as a counting system in base 5.
Activating “MUTE” while at any volume level does not lose the 
chosen volume setting.  When deactivating mute the X2.2 will be 
returned to the last stored volume level.
Should you wish to upgrade  the 2.2’s status to a full function remote 
control preamplifier, this may be acomplished at the factory.  With 
additional circuitry and new front panel the X2.2 may be turned 
into an X2.5  This upgrade adds an informative vacuum fluorescent 
display, balance control, display brightness, mono, unity function, 
gain setting and remote control capability.
A rear mounted pair of  five-way binding posts are intended to 
control the on/off  function of  our own X series power amplifiers 
from the X2.2 front panel.  This function is activated through 
software by simultaneously pushing the extreme left control button 
(INPUT) and the extreme right (MUTE) control button. When 
the preamp mode “Amp” is selected it allows the user to switch 
a nominal 12 volts DC at maximum draw of  50 milliamps to the 
rear panel red and black five-way binding posts.  In some instances 
this voltage may have the ability to control products from other 
manufacturers, but we by no means have comprehensive listing of  
their compatible features.  If  you have questions about compatibility 
your service technician and dealer are an excellent source of  
information. For connection to other Pass Labs products please 
consult the owner’s manual for specific instructions.
The electronic volume control allows approximately 60 dB range. In 
this manner tracking of  the volume of  the two balanced channels is 
possible with accuracy unavailable on any ordinary volume control,