Cambridge Audio 651A Contents, Introduction, By registering, you’ll be the first to know about

Contents
Introduction	2
Important safety instructions	3
Limited warranty	4
Rear panel connections	5
Connections	6
Front panel controls	9
Apple device compatibility	10
Remote control	10
Custom installation (C.I.) use	11
CAP5: Five-way protection system	11
Technical specifications	12
Troubleshooting	12

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This guide is designed to make installing and using this product as easy as possible. Information in this document has been carefully checked for accuracy at the time of printing; however, Cambridge Audio's policy is one of continuous improvement, therefore design and specifications are subject to change without prior notice.

This document contains proprietary information protected by copyright. All rights are reserved. No part of this manual may be reproduced by any mechanical, electronic or other means, in any form, without prior written permission of the manufacturer. All trademarks and registered trademarks are the property of their respective owners.

© Copyright Cambridge Audio Ltd 2011

Introduction

Thank you for purchasing this 651A Amplifier. We are confident that you will enjoy many years of listening pleasure from it. Like all Cambridge Audio products the 651A adheres to our three core principles – stunning performance, ease of use and incredible value.

Developed as part of our on-going research and development regime, including extensive listening tests, we have incorporated many subtle tweaks and improvements to our circuits, components and layouts in the pursuit of our passion for sound quality.

Very high quality components are used throughout including an Alps volume pot, polypropylene signal capacitors, gold-plated speaker outputs, custom-made electrolytic capacitors in critical positions and several new circuit tweaks. The amplifier is a completely discrete bipolar transistor- based circuit honed over many years powered from a bespoke audiophile-grade toroidal transformer.

Also featured is an environmentally friendly low power (<1W) standby circuit. This circuit completely powers down the amplifier circuits in Standby mode yet is itself totally isolated when the amplifier is on, thus having no effect on sound quality.

All this proprietary engineering is housed within our low resonance, acoustically damped chassis. An Azur Navigator remote control is also provided, giving full remote control of your amplifier in an attractive and easy to use handset.

Remember your 651A can only be as good as the system it is connected to. Please do not compromise on your source equipment, speakers or cabling.

Naturally we particularly recommend source components from the Cambridge Audio Azur range which includes CD players, BD/DVD/SACD/ DVD players, iPod docks and Network players which have been designed to the same exacting standards as this amplifier.

Your dealer can also supply excellent quality Cambridge Audio interconnects to ensure your system realises its full potential.

Thanks for taking the time to read this manual, we do recommend you keep it for future reference.

Matthew Bramble

Cambridge Audio Technical Director and the 651A design team

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