Nady Systems HPA-4 manual Features, Table Of Contents, H P A

H P A - 4

4 C H A N N E L H E A D P H O N E / A M P L I F I E R / L I N E D I S T R I B U T O R

Congratulations on your choice of headphone/amplifier/line distributor — you have purchased one of the finest stereo headphone/ am- plifier/line distributors on the market today. This unit was developed using the expertise of professional sound engineers and working musicians. You will find that your new NADY AUDIO HPA-4 has superior performance and greater flexibility than any other headphone/ amplifier/line distributors in its price range. Please read this manual carefully to get the most out of your new unit.

Thanks for selecting NADY AUDIO as your choice in headphone/amplifier/line distributor.

FEATURES

With extensive switching functions, extreme efficiency, and unmatched sound quality, the ultra-versatile HPA-4 is a universal 4-channel multi-purpose headphone amplifier/line distribution system—perfect for the most demanding professional stage and studio applica tions.

•Four totally independent stereo high-power headphone ampli- fier/line distribution channels in a convenient single rack pack- age—an ingenious, easy-to-operate unit allowing a maximum variety of both useful monitoring and stereo line level signal dis- tribution options.

•Input Source Select switches and Phone and Line 1/4" TRS ste- reo outputs on each channel, and 4 independent stereo input sections (each with servo-balanced L & R 1/4"TRS jacks) en- able independent selection of any of the 4 stereo signals for each headphone amp/line distribution channel. This allows se- lecting from up to 4 completely independent monitor signals for each set of headphones connected to the HPA-4 for optimum monitoring flexibility or 4 separate choices for each channel’s Line Output for enabling many useful, simple audio switching/ routing solutions.

•Separate Volume control for each channel adjusts the level to both Phone and parallel Line outputs

•Easily expandable for optimum versatility in any application—up to four HPA-4’s can be daisy chained for additional fully select- able headphone/line distribution requirements

•No-compromise circuit design, stringently selected tight-toler- ance components and low-noise, extremely linear or amps for reference-quality, transparent audio with maximum headroom even at extremely high headphone volume levels

•High-quality, rugged construction for maximum reliability

•Shielded internal dual regulated power supply with ~115V(60Hz)/~230V(50Hz) select switch and fused IEC power cord connector

TABLE OF CONTENTS

FEATURES		2
WARNING		3
INSTALLATION		4
FRONT & REAR PANEL CONNECTIONS		5
CONTROLS & INDICATORS		5
APPLICATIONS		6
1.	Using the HPA-4 as a headphone amplifier	6
2.	Using the HPA-4 as a line distribution unit	6
3.	Daisy chaining multiple HPA-4’s together for additional
	headphone/line distribution requirements	6
SPECIFICATIONS		6
NOTES		7

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