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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-3500 was designed by renowned circuit designer John Curl and is built
using only the finest precision components available for optimum musical quality and performance.
Each channel of the amplifier has its own power supply including an independent 1.4 kVA toroidal power
transformer and 97,600 uF of filter capacitance. This dual-mono configuration provides the high levels
of power needed for some of today’s more sophisticated speaker systems. The inherently low output
impedance of the HCA-3500 easily maintains control of your loudspeakers even during demanding
impedance variations.
Unique circuit topology of the direct coupled HCA-3500 includes balanced JFET input transistors,
MOSFET drivers and ultra high current output devices. The output delivers a generous 15 watts of pure
class A operation. 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-3500
Carefully unpack your amplifier and remove all the enclosed accessories. These accessories include two
12 AWG AC cords, rack mount hole plugs, 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 HCA-3500
Locate 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 amplifier rather that stacking it directly above or below your other components.
The HCA-3500 occupies four rack spaces (7") in a standard 19 inch equipment rack. When rack mounting
the HCA-3500, have someone help support the unit while you bolt the component to the rack rails. Be
sure to use heavy duty mounting bolts and nylon shoulder washers on both sides of the faceplate to avoid
scratching the amplifier’s front panel and also to help prevent ground loops. Contact Middle Atlantic
Products at (201) 839-1011 to obtain any additional rack mounting hardware you may need.