4
XP-25 Owner’s Manual
Before you sit back and listen, take time to read and understand
cartridge loading. When you find the desired setting, please record
that setting so that you can come back to it in the future. For your
convenience we left space at the end of this manual for just these
sorts of details.
TECHNICAL DETAILS:
As previously indicated the XP-25 is a twin chassis design. One
chassis holds the fully filtered and regulated power supplies and
the second chassis houses the analog gain circuits, input switching,
loading and all those details and features normally associated with a
reference RIAA phono stage.
The two chassis are interconnected with a shielded and filtered Din-
25 cable. This Din-25 cable only carries power, never analog signal.
As far as this product is concerned you may use either Din-25 power
connector on the power supply chassis to link-up with the XP-25
control module. Both power connectors are identical and provide
identical performance from the phono-stage. The second Din-25
connector is capable of powering either another XP-25 phono-stage
or a Pass Laboratories XP-20 pre-amplifier without degradation of
measured or perceived performance.
Consumers frequently ask us if they may substitute a Din-25 cable
of their choice for the one Pass Laboratories supplies. The answer is
yes, provided that cable carries all the necessary legal approvals. For
those of you so inclined, please pick a shielded and filtered cable so
as to not degrade the full measure of performance your new XP25 is
capable of producing.
Never attach or detach the Din_25 cable with the power supply,
powered up from the wall. Always unplug your XP-25 from line
voltage prior to attaching or removing the Din 25 cable.
The rear of the power supply chassis has a standard IEC 320 power
inlet module a fuse holder and twin Din-25 power connectors. As
with the Din-25 cable, the user is free to substitute a suitable IEC
power cord of their choice. This product accepts any cordset with
an IEC 60320 C13 connector or equivalent. Be aware however that
the XP-25 power supply is not particularly sensitive to differences in
properly terminated power cords.
If you substitute an aftermarket power cord you need to be aware
of the following. The ground pin on the power cord provides this
