PassLabs XHT Brochure

X150, X3 and X5 AMPLIFIERS

The X150, X3 and X5 amplifiers embody the

design technology and refinements of the larger
“X” series amplifiers including the patented
Supersymmetry™ circuit.

The Supersymmetry circuit topology improves the
performance of a balanced amplifier by precisely
matching the characteristics of the two balanced
halves. To the extent that distortion and noise can
be made identical on the two output connections,
they will not be seen at the balanced output.
Ordinary matching techniques can achieve
improvements by a factor of 10 or so under the
best conditions, but the Supersymmetric technique
lowers distortion and noise by another order of
magnitude.

The X150, X3 and X5 all accept both single-ended
and balanced inputs and are fully DC coupled with
no capacitors in the signal path.

The X150 is a stereo amplifier and is rated at 150
watts per channel in 8 ohms.

The X3 is a 3 channel amplifier and is rated at 150
watts per channel in 8 ohms all chanels driven.

The X5 is a 5 channel amplifeir and is rated at 125
watts per channel in 8 ohms all channels driven.

The power supply features a high current toroidal
transformer driving dual mono secondary output
stage supplies. Four 31,000 uF computer grade
storage capacitors reduce power supply ripple
to about 1/10 volt. The front end circuitry is
powered by a separate secondary system with an
additional 30 volts DC to drive the output stage
“rail to rail” without distortion.

The appearance of these amplifiers is similar to
the larger amplifiers in the series. The face plate
is machined from thick aluminum stock and
then anodized instrument gray. The handles are
exactly the same extrusion as utilized on the larger
amplifiers. The main power switch is located on
the rear of the amplifier and a convenient standby
switch is located on the front panel.

Convenient front panel LEDs indicate the status
of the amplifier. The input, output, and AC
connector are located on the rear of the amplifier.
Single-ended inputs are via RCA connectors and
balanced inputs are via XLR connectors. Heavy
duty binding posts are provided for the speaker
outputs.

The X150, X3 and X5 are the same physical size:
19” wide, 7” high, and 20” deep front handle to
rear handle.

Pass Labs, PO Box 219, Foresthill, CA 95631, Tel: [phone], Fax: [phone], www.passlabs.com

PASS LABS