PS Audio HCA-2 - Manual (Page 2)

Warning
To prevent fire or shock hazard, do not expose
the unit to rain or moisture. To avoid electrical
shock, do not open the enclosure. Refer
servicing to qualified personnel only.
To prevent electric shock, use a 3 prong,
grounded power cable.
Any change or modifications not expressly
approved in the manual could void your
warranty.
Do not connect the output of the HCA-2 to
ground. The output of the HCA-2 is a balanced
output and should not be grounded.
Do not operate the amplifier with no load (ie,
without speakers attached)
Safety Instructions
Read the operating instructions provided with
the HCA-2.
Retain the operating instructions for later use
and reference.
Unplug the HCA-2 from the wall outlet before
changing the fuse or performing any cleaning
or service.
Do not operate the HCA-2 near water. Avoid
placement near a water reservoir or excessive
moisture.
When replacement parts are required, be sure
they are specified by the manufacturer to have
the same characteristics as the original part.
Unauthorized substitutions may result in fire,
electric shock, or other hazards.
Do not operate with faulty or frayed power
cables.
Overview
Congratulations! You have just taken a step into
an incredible new dimension of the audio world.
The Hybrid Class A stereo amplifier, or HCA-2,
represents a revolution in the innovation and
design of amplifier technology.
Analog-only amplifier circuits have been refined
over and over for the last 100 years to a point
where we hardly expect to gain any further
significant achievements. Attempts have been
made at pure digital designs only to yield results
that certainly leave much more to be desired.
The HCA-2 is an audiophile’s first look at these
two concepts being blended into one: a hybrid
amplifier with a fully balanced, Class A input
stage and a truly state-of-the-art digital output
section known as SDAT™.
Design Overview
The HCA-2 is a stereo (two-channel) amplifier
rated at 150 watts per channel into 8 ohms. It is
comprised of two main stages: the input stage
and the output stage.
The input stage is the heart and soul of the
HCA-2’s sound. A fully balanced, Class A input
stage that can be fed by either single-ended
RCA connectors or the balanced XLR type.
The output stage of the HCA-2 is our unique
Super Digital Amplification Technology SDAT™
circuitry that provides an absolutely linear
response into any loudspeaker load. SDAT
circuitry is not load sensitive which assures
that the frequency response will not change
regardless of the loudspeaker load.
The HCA-2 represents a state of the art power
amplifier that is affordable, efficient, and can
be used to glorify the beauty and passion of
recorded music in ones home. We trust you will
enjoy the HCA-2 for years.
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