Pass Labs pre-amplifier - Manual (Page 4)

4 X0.2 Owner’s Manual
signal typically adds additional gain stages and degrades the inherent
noise and distortion superiority of balanced signal, coloring what you
eventually hear.
Pass Labs, through its unique patented “Supersymmetry” topology,
maintains the advantages of a true balanced signal throughout
the electronics chain. The salient point of this approach affords
significantly less signal manipulation, higher input impedance, as
much as a 100:1 (20dB) reduction in distortion while providing
greater gain, and twice the dynamic headroom of identical circuits
running single ended.
The X0.2 maintains the integrity of its received signal by treating
all sources internally as balanced signals and converts seamlessly
between balanced and unbalanced inputs and outputs without any
additional components in the signal path. This was a conscious
effort by Pass Labs to enhance the consumer’s ability to integrate
source components and power amps with otherwise incompatible
requirements through a virtually transparent control center.
It is not absolutely necessary to have the “mono” cable installed
between these connectors unless you plan to operate the X0.2
in mono mode. You may use our supplied “mono” cable or an
aftermarket male - female XLR of your choosing. If you choose an
aftermarket cable, length should be consistent with the placement of
your equipment and not excessively long.
The DIN connectors plug into their mating jacks and then screw into
the rear panel on all three chassis. These connectors are intentionally
a snug fit, but should never be forced. The single unmarked DIN
jack on the right rear of the power supply control chassis is currently
unused, we have reserved it for future performance enhancements.
We have provided a standard IEC AC power cord that fits into the
IEC line receptacle at the rear of the pre-amplifier power chassis.
The pre-amplifier is equipped for operation with an earth ground
provided by the user’s AC outlet. Do not defeat this ground. The
chassis and circuit ground of the pre-amplifier are connected to earth
through a power thermistor, which gives a ground connection for
safety but helps avoid ground loops.
As a safety issue we suggest that the power cord should be
the last cable installed on your pre-amplifier. The power
cord should be attached to the pre-amp power supply prior to
plugging into “house power.”