Pass XP-22 Owner's Manual

PASS

TM

XP-22 Owner’s Manual

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For your protection please read the following:

Water and moisture: Electrical devices should not be used near

water ( as per example, near a bathtub, washbasin, kitchen sink,
laundry tub, wet basement or swimming pool ). Care should be
taken such that objects do not have the opportunity to fall, and
that liquid is never spilled onto or into the device enclosure through
openings.

Power Sources: An electrical device must be connected to a
mains power source in strict accordance with the supplied product

owner’s manual. Please verify that the AC mains voltage specied

in the product manual matches those requirements indicated
on the unit and the AC voltage provided to your location by the
power company.

Grounding: Adequate precautions should be taken so that the
grounding provisions built into an electrical product are never
defeated.

Power Cords: Pass Laboratories provides a power supply cord
that meets all legislated requirements for the market in which the
product was originally sold. If you choose to substitute an after­market product we urge you to choose one that is fully safety rated
by the necessary local authority.

Power Cord Protection: Power supply cords should be routed so
that they are not likely to be walked on, abraded, or pinched by
items placed on or against them, paying particular attention to
cords where they enter plugs or exit from a device. Never under
any circumstance insert a cut or damaged power cord into a
mains power socket.

Power and Signal: Cables should never be connected /
disconnected with equipment powered up. Failure to heed this
warning may damage or destroy equipment.

Ventilation: Power-ampliers run hot, but you should be able to

place your hands on them without discomfort. You must allow for
this heat in installation, by providing for free air circulation around
the product. Electronics should not be subjected to sources of
excessive radiant heat. Excessive heat can shorten the life of the
product and may cause the electronics to self-protect and shut
down.

Servicing: To reduce the risk of re, electrical shock or other injuries,

the user should not attempt to service the device beyond that
which is described in the operating instructions. All other servicing

must be referred to qualied service personnel.

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Introduction:

At Pass Labs we don’t change our products unless we feel that

the changes are signicant improvements over previous versions.

Because of this we see typical product life spans of seven to eight
years.

We are constantly working on and listening to new things and
increasing our knowledge of circuits and components on sound.

Eventually we nd some things worth putting into production
because they are signicant enough. That time has come with a
new series of preampliers.

The new design uses double shielded low noise toroids in external
supply connected via aviation grade circular connectors
using silver on copper. The power supply is dual mono with two
transformers with lower radiated and mechanical noise. Noise is the
most prominent part of THD+N at low levels, so by lowering noise we
get better resolution and dynamics.

The gain circuitry continues to use our favorite transistors from
Toshiba but has a larger, higher biased, output stage similar to the

Xs preamplier, and includes auto bias.

The larger output stage makes longer and multiple cable runs
easier to drive and gives us the advantage of simplifying our single
ended output circuitry while increasing performance.

The volume control is a single stage instead of two stages and has
more range it is quieter and more accurate. This the same volume
control as used in the XP-30.

Overall this makes for a quieter more neutral, musical and versatile
control center for your system.

The XP-22 measures spectacularly well but it really stands out
sonically.

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