Introduction, Unpacking Your Amplifier

Introduction

Congratulations on your purchase of this precision audio component and thank you for your selection of Parasound. The Parasound HCA-1205A and HCA-855A five channel amplifiers are virtually identical in operation and sonic performance. However, the HCA-855A has slightly less power and is therefore not THX certified like the HCA-1205A. 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 Amplifier

Carefully unpack your amplifier and remove all the enclosed accessories. 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 and Rack Mounting 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 amplifier rather that stacking it directly above or below other components.

With the use of the optional Parasound RMK-3, both the HCA-1205A and HCA-855A occupy three rack spaces (5 1/4") in a standard 19 inch equipment rack. Be sure to use the heavy duty mounting bolts with nylon shoulder washers on both sides of the faceplate to avoid scratching the amplifier’s front panel and to help prevent ground loops. This mounting hardware is included with the RMK-3. When rack mounting equipment, have someone help support the unit while you bolt the component to the rack rails.

Ventilation Requirements for Your Amplifier

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.

Making Connections to Your Amplifier

Leave the AC cord disconnected while making any input or speaker connections. When making connections to the amplifier, make sure there is no strain or tension on the input leads, speaker wires, or AC cord that could cause them to pull loose.

-6-

HCA-1205A specifications

The Parasound HCA-1205A is a highly regarded audio power amplifier known for its exceptional performance and versatile applications. Designed to deliver high-quality, reliable power to a range of audio systems, the HCA-1205A is particularly favored by audiophiles and home theater enthusiasts.

One of the standout features of the HCA-1205A is its five-channel configuration, allowing it to effectively drive multiple speakers while maintaining a compact footprint. Each channel is rated at 120 watts into 8 ohms and can deliver up to 200 watts into 4 ohms, providing ample power for a wide range of speaker types and impedances. The amplifier's robust power output ensures dynamic sound reproduction across all audio frequencies, translating to a compelling listening experience.

The HCA-1205A employs advanced circuit design, including a high-current, Class AB topology. This design strikes a balance between efficiency and sound quality, delivering clean, distortion-free amplification even during demanding playback scenarios. The amplifier incorporates large power supplies and heavy-duty output transistors, which contribute to its ability to drive low impedance loads without compromising performance.

Another notable feature of the HCA-1205A is its thermal management system. Equipped with large heat sinks and an advanced cooling design, the amplifier remains cool even during extended use, ensuring reliability and longevity. The inclusion of short-circuit and thermal protection circuits further enhances safety, preventing damage under adverse conditions.

Connectivity is made convenient with various input options, including RCA connections and balanced XLR inputs. The amplifier's rear panel features a range of output binding posts, allowing for flexible speaker connections and easy integration into existing audio setups. Additionally, the HCA-1205A supports bridged operation for increased power output in specific configurations.

Parasound is known for its commitment to quality, and the HCA-1205A is no exception. Its build quality is robust, featuring a sturdy chassis that minimizes vibration and interference. The amplifier's aesthetic design, with a sleek finish and informative front panel, fits seamlessly into any modern audio or home theater environment.

In summary, the Parasound HCA-1205A is a powerful and versatile audio amplifier that stands out due to its exceptional sound quality, advanced technological features, and reliable performance. Whether for a robust home theater setup or a high-fidelity audio system, the HCA-1205A is an excellent choice for those seeking to elevate their listening experience. Its combination of power, efficiency, and flexibility solidifies its status as a preferred amplifier among audio enthusiasts.