Parasound A 23 manual Thank YOU, Congratulations and Thank You for Choosing Parasound

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THANK YOU!

Congratulations and Thank You for Choosing Parasound

Your new Parasound Halo Series A 23 power amplifier presents the latest advancements in amplifier technology. The A 23 is built to the strict quality and performance standards set by Parasound. We’re proud to offer you this exceptional audio component that will bring you many years of enjoyment and dependability.

Here at Parasound, we design our products to perform at a higher level of flexibility and sonic performance than you may have expected. We encourage you to read this entire manual to learn all the features and capabilities of your new Halo Series A 23 Amplifier.

If you’re eager to get up and running right away, simply follow the basic step-by-step instructions to connect and operate the A 23. If you want to learn about some of the technical and design aspects of your A 23, refer to the Technically Speaking and Parasound A 23 Design Overview sections in the back of the manual. If you run into difficulties, the Troubleshooting Guide should help you quickly remedy the problem.

We appreciate you taking the time to read these instructions and thank you for selecting Parasound for your listening pleasure.

The Parasound Staff

Unpacking Your A 23

Unpack your A 23 from the shipping carton, remove the enclosed AC power cord, and the control wire with sub-mini 2.5 mm plugs on each end. (This is the trigger connection wire). While you are unpacking your new amplifier, inspect it thoroughly for possible shipping damage. If you see any, contact your Parasound dealer right away. Be sure to save and store both the inner and outer cartons and the packing inserts for possible future transport. To save room for storage, you can cut the seams on the bottom of the cartons and flatten them.

Keeping Records for Future Reference

Record the serial number located on the bottom of your A 23 in the space below. Also note your Parasound Dealer’s name and phone number. We recommend that you keep your purchase receipt with this manual and store them both in a safe place. You may need to refer to this information sometime in the future.

Parasound A 23 Amplifier Serial #: ____________________

Parasound Dealer: ____________________________________

Phone Number:_______________________________________

Date of Purchase: _____________________________________

YOU SHOULD KNOW

There is no Parasound warranty for this unit if it was not purchased from an Authorized Parasound Dealer. Investigate any warranty claims made by unauthorized dealers very carefully as you will need to depend entirely upon the dealer, and NOT upon Parasound. Unauthorized dealers may lack the capability to arrange repairs of Parasound equipment. Authorized Parasound Dealers are listed at www.parasound.com or you can call 415-397-7100 between 8:30 am and 4:30 pm Pacific time.

A missing or tampered serial number could indicate that this unit was stolen or sold by an unauthorized dealer. If this unit is missing its serial number, you should return it to your dealer immediately for a full refund.

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Contents Amplifier Parasound Staff Unpacking Your a Thank YOUCongratulations and Thank You for Choosing Parasound Keeping Records for Future ReferenceTable of Contents AmplifierPlacement Guidelines for Your a Rack Mounting Your Parasound aWhat You’ll Need Before ConnectingLeft and Right Balanced Input Jacks To ConnectLeft and Right Unbalanced Inputs Loop Out Connector Speaker Terminals Connecting Speakers to the aSpeaker Wire Length and Gauge thickness Correct Speaker Polarity is ImportantConfiguring the a 23 for Bridged Mono Operation IMPORTANT! Before Trying Bridged MonoManual and Automatic Turn ON-OFF Options Connecting an Active Audio Source for Automatic On-OffTurn Off Delay in the Audio Mode Manual On-Off from the Front PanelAutomatic ON-OFF Connecting the a 23 to Trigger Another Component Understanding the Indicators on the a AC Voltage Selection Switch Connecting the AC Power CordAC Power Connections Maintaining Your a Troubleshooting Guide Trouble Probable Cause RemedyServicing Your a If All Else Fails -Call Us for HelpTechnically Speaking Audio Trigger Sensitivity AdjustmentBare Speaker Wire Ends Balanced and Unbalanced LinesLevel Controls Choosing Brands of Interconnect Cables and Speaker WireLoop Out Jacks Parasound a 23 Design Overview Total Protection Output StageClass A-A/B Operation Relay ProtectionParasound a 23 Specifications Parasound Products, Inc Battery Street, San Francisco, CA

A 23 specifications

The Parasound A 23 is a highly acclaimed power amplifier recognized for its performance and versatility in high-fidelity audio systems. Designed for both audiophiles and casual listeners, it offers robust sound quality, making it a popular choice in the world of home theater and music reproduction.

One of the standout features of the Parasound A 23 is its power output. The amplifier is rated at 125 watts per channel into 8 ohms, and it can deliver 200 watts per channel into 4 ohms. This substantial power allows it to drive a wide range of speakers effectively, from more sensitive models to those requiring additional power. The A 23’s high current capability ensures that musical dynamics are accurately reproduced, resulting in a responsive and engaging listening experience.

Built using a Class AB topology, the A 23 balances efficiency and sound quality. Class AB amplifiers like this one maintain low distortion levels while delivering the warmth associated with tube amplifiers. The careful engineering provides a natural sound, ensuring that vocals and acoustic instruments are rendered faithfully. The dual-mono design minimizes crosstalk and maximizes separation between channels, enhancing stereo imaging.

Another characteristic of the Parasound A 23 is its versatile connectivity. It features both balanced XLR and unbalanced RCA inputs, allowing you to integrate it seamlessly into various audio setups. The design includes a high-quality power supply with a large toroidal transformer, which contributes to the amp's stability and reliability. The robust build quality is evident in its all-steel chassis, ensuring durability and performance in any environment.

The A 23 also incorporates several advanced technologies, such as a soft-start circuit that prolongs component life and increases reliability. The amplifier is equipped with reliable thermal protection circuitry, preventing overheating and ensuring long-term operation without issues.

In conclusion, the Parasound A 23 is a powerful and versatile amplifier that delivers outstanding audio performance. Its blend of high power output, Class AB design, dual-mono architecture, and solid construction make it an ideal choice for those looking to elevate their audio experience, whether in a home theater system or a dedicated listening room. With its combination of features and durability, the A 23 stands out among amplifiers in its class.
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