Pass Labs XA100 Manual Do Utilizador

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XA100 Owner’s Manual
The XA100 has a massive toroidal transformer coupled to a high 
current DC reservoir. Recognizing that the XA100’s ability to resolve 
microdynamics is best experienced with clean power, the extreme 
low-level resolution of  the XA-series benefits from a specially 
designed power supply that significantly reduces and rejects power 
line borne noise.
The XA amps open the sonic soundstage to the very limits of  the 
recording format.  Through the XA100 complex musical passages 
reveal themselves in the most dramatic manner.   With the XA100 
you will hear everything within the upper octaves, which includes any 
recording, source or loudspeaker issues.  Keep this in mind when 
choosing complementary equipment, remembering that recordings 
and the other components in the signal chain will strongly dictate 
soundstage width and imaging and likely be the limiting factors in 
your listening environment. The room itself  will also add its acoustic 
signature, and should be considered an audio component.
Speaker selection should be strictly a matter of  personal taste. 
The XA100 is unconditionally stable into any load presented by a 
loudspeaker, but will provide less power into other than 8 ohms.  The 
XA100 accommodates both single ended (RCA) and balanced inputs 
(XLR).  Input impedance’s are 11 kohm unbalanced and 22 kohm 
balanced to permit integration with the widest possible range of  
upstream components. 
You can position this amplifier anywhere you wish, but it must have 
ventilation.  We do not recommend placing it in enclosed cabinets 
or small closets without means for air to circulate freely.  Stacking 
these power amplifiers directly upon each other is not recommended 
for the same reason.  This amplifier idles at approximately 300 watts, 
the equivalent of  a large reading light. At idle most of  that energy 
is dissipated across the heat sinks, so the heat generated by each 
XA100 is likewise equivalent to a large incandescent reading light. To 
dissipate this heat the product should have about 6 inches clearance 
to the top and sides for adequate air circulation. 
Let’s talk about power requirements.  The amplifier draws about 2.6 
amps (continuous rms) at 120 volts out of  the wall during operation, 
and this reflects mostly the idle current that we run through the 
output stage. When not actually intending to play music the XA100 
should be left in standby mode.  In standby mode it draws only a few 
watts of  power, that necessary to keep the capacitors charged.  
We have provided a standard IEC power cord that fits into the 
standard 15 amp IEC receptacle at the rear of  the amplifier chassis.  
Requirements