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Introduction
Congratulations on your purchase of this precision audio component and thank you for your selection of
Parasound. Your Parasound HCA-1201A High Current Mono-Block Power Amplifier was built using
only the finest precision components available for optimum musical quality and performance.
The HCA-1201A High Current Power Amplifier has a 280 VA toroidal power transformer and 20,000
uF of filter capacitance to provide the high levels of power needed for some of today’s more sophisticated
speaker systems. The inherently low output impedance of the HCA-1201A easily maintains control of
your loudspeakers even during demanding impedance variations.
Unique circuit topology of the direct coupled HCA-1201A includes balanced JFET input transistors,
bipolar drivers and ultra high current output devices. Additionally, there are no inductors or capacitors
in the signal path. These design refinements reduce high odd-order harmonic distortion, improve overall
clarity and preserve low-level musical details.
Please take a few moments to read these instructions so that you may fully understand the capabilities
of your new Parasound power amplifier.
Unpacking Your HCA-1201A
Carefully unpack your amplifier and remove all the enclosed accessories. These accessories include one
14 AWG AC cord, and this manual. Be sure to inspect the unit for any possible shipping damage. If you
see any, contact your Parasound Dealer immediately. Save all the packing material in case you need to
ship the amplifier for repair. Before you proceed, find the serial number located on the rear panel of your
amplifier and record it here for reference:
Serial #____________________
Date of Purchase____________________
Installing Your Amplifier
Place your amplifier away from heat sources such as air ducts and radiators. Always mount the amplifier
horizontally and make sure that your cabinet or shelf can support its weight. It is best to provide a separate
shelf for your amplifiers rather than stacking it directly above or below other components.
Ventilation Requirements
To insure safe and reliable operation, it is very important that the amplifier has plenty of ventilation to
prevent overheating and automatic shut down from its thermal protection circuitry. Please observe the
following ventilation guidelines when installing your amplifier in a cabinet or other enclosed area:
1) If you are not using a fan, allow at least six inches on each side and above the amplifier, and do
not close off the front with a cabinet door or panel.
2) If you are enclosing the amplifier within an equipment cabinet, use a fan to draw in cool air and
exhaust warm air. Two vent holes are required: one for intake and one for exhaust.
3) Do not place the amplifier on carpeting that will obstruct the air flow into the bottom of the
amplifier chassis and heatsinks.
4) Avoid stacking components. If you do stack components, you must use a fan to circulate the
warm air that will quickly become trapped between them when they are powered on.
