Limited warranty

Ventilation

IMPORTANT – The unit will become hot when in use. Do not place anything on top of the unit. Do not place in an enclosed area such as a bookcase or in a cabinet without sufﬁcient ventilation.

Ensure that small objects do not fall through any ventilation grille. If this happens, switch off immediately, disconnect from the mains supply and contact your dealer for advice.

Positioning

Choose the installation location carefully. Avoid placing it in direct sunlight or close to a source of heat. No naked ﬂame sources, such as lighted candles, should be placed on the unit. Also avoid locations subject to vibration and excessive dust, cold or moisture. The unit can be used in a moderate climate.

This unit must be installed on a sturdy, level surface. Do not place in a sealed area such as a bookcase or in a cabinet. Do not place the unit on an unstable surface or shelf. The unit may fall, causing serious injury to a child or adult as well as serious damage to the product. Do not place other equipment on top of the unit.

Due to stray magnetic ﬁelds, turntables or CRT TVs should not be located nearby due to possible interference.

Electronic audio components have a running in period of around a week (if used several hours per day). This will allow the new components to settle down and the sonic properties will improve over this time.

Power sources

The unit should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power-supply to your home, consult your product dealer or local power company.

This unit can be left in Standby mode when not in use and will draw <1W in this state. To turn the unit off, switch off at the rear panel. If you do not intend to use this unit for a long period of time, unplug it from the mains socket.

Overloading

Do not overload wall outlets or extension cords as this can result in a risk of ﬁre or electric shock. Overloaded AC outlets, extension cords, frayed power cords, damaged or cracked wire insulation and broken plugs are dangerous. They may result in a shock or ﬁre hazard.

Be sure to insert each power cord securely. To prevent hum and noise, do not bundle the interconnect leads with the power cord or speaker leads.

Cleaning

To clean the unit, wipe its case with a dry, lint-free cloth. Do not use any cleaning ﬂuids containing alcohol, ammonia or abrasives. Do not spray an aerosol at or near the unit.

Battery disposal

Please dispose of any discharged batteries according to local environmental/electronic waste disposal guidelines.

Loudspeakers

Before making any connections to loudspeakers, make sure all power is turned off and only use suitable interconnects.

Servicing

These units are not user serviceable. Never attempt to repair, disassemble or reconstruct the unit if there seems to be a problem. A serious electric shock could result if this precautionary measure is ignored. In the event of a problem or failure, please contact your dealer.

Cambridge Audio warrants this product to be free from defects in materials and workmanship (subject to the terms set forth below). Cambridge Audio will repair or replace (at Cambridge Audio's option) this product or any defective parts in this product. Warranty periods may vary from country to country. If in doubt consult your dealer and ensure that you retain proof of purchase.

To obtain warranty service, please contact the Cambridge Audio authorised dealer from which you purchased this product. If your dealer is not equipped to perform the repair of your Cambridge Audio product, it can be returned by your dealer to Cambridge Audio or an authorised Cambridge Audio service agent. You will need to ship this product in either its original packaging or packaging affording an equal degree of protection.

Proof of purchase in the form of a bill of sale or receipted invoice, which is evidence that this product is within the warranty period, must be presented to obtain warranty service.

This Warranty is invalid if (a) the factory-applied serial number has been altered or removed from this product or (b) this product was not purchased from a Cambridge Audio authorised dealer. You may call Cambridge Audio or your local country Cambridge Audio distributor to conﬁrm that you have an unaltered serial number and/or you made a purchase from a Cambridge Audio authorised dealer.

This Warranty does not cover cosmetic damage or damage due to acts of God, accident, misuse, abuse, negligence, commercial use, or modiﬁcation of, or to any part of, the product. This Warranty does not cover damage due to improper operation, maintenance or installation, or attempted repair by anyone other than Cambridge Audio or a Cambridge Audio dealer, or authorised service agent which is authorised to do Cambridge Audio warranty work. Any unauthorised repairs will void this Warranty. This Warranty does not cover products sold AS IS or WITH ALL FAULTS.

REPAIRS OR REPLACEMENTS AS PROVIDED UNDER THIS WARRANTY ARE THE EXCLUSIVE REMEDY OF THE CONSUMER. CAMBRIDGE AUDIO SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF ANY EXPRESS OR IMPLIED WARRANTY IN THIS PRODUCT. EXCEPT TO THE EXTENT PROHIBITED BY LAW, THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS AND IMPLIED WARRANTIES WHATSOEVER INCLUDING, BUT NOT LIMITED TO, THE WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PRACTICAL PURPOSE.

Some countries and US states do not allow the exclusion or limitation of incidental or consequential damages or implied warranties so the above exclusions may not apply to you. This Warranty gives you speciﬁc legal rights, and you may have other statutory rights, which vary from state to state or country to country.

For any service, in or out of warranty, please contact your dealer.

Plug-ﬁtting Instructions (UK only)

The cord supplied with this appliance is factory-ﬁtted with a UK mains plug ﬁtted with a 5-amp fuse inside. If it is necessary to change the fuse, it is important that a 5-amp fuse is used. If the plug needs to be changed because it is not suitable for your socket, or becomes damaged, it should be cut off and an appropriate plug ﬁtted following the wiring instructions below. The plug must then be disposed of safely, as insertion into a mains socket is likely to cause an electrical hazard. Should it be necessary to ﬁt a 3-pin BS mains plug to the power cord, the wires should be ﬁtted as shown in this diagram. The colours of the wires in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug. Connect them as follows:

The wire which is coloured BLUE must be connected to the terminal which is marked with the letter ‘N’ or coloured BLACK.

The wire which is coloured BROWN must be connected to the terminal which is marked with the letter ‘L’ or coloured RED.

The wire which is coloured GREEN/YELLOW must be connected to the terminal which is marked with the letter ‘E’ or coloured GREEN.

If a standard 13-amp (BS 1363) plug is used, a 5-amp fuse must be ﬁtted or, if any other type of plug is used, a 5-amp fuse must be ﬁtted, either in the plug or adaptor, or on the distribution board.

550A, 650A specifications

Cambridge Audio, a revered name in the audio industry, is renowned for producing high-quality amplification solutions. Among its distinguished lineup, the 650A and 550A integrated amplifiers stand out for their exceptional performance and innovative features, making them favorites for both audiophiles and casual listeners.

The Cambridge Audio 650A amplifier is designed to deliver powerful and precise sound, harnessing a robust 75 watts per channel into 8 ohms. This amplifier features an advanced toroidal transformer, which enhances efficiency and reduces electromagnetic interference, ultimately providing cleaner audio. The 650A employs Cambridge's proprietary Class A/B amplifier technology, ensuring a rich and warm sound signature that appeals to lovers of diverse music genres. Additionally, the inclusion of a high-quality headphone output allows for a private listening experience with minimal signal degradation.

In contrast, the 550A model offers a more straightforward approach while still maintaining impressive audio fidelity. Delivering 50 watts per channel into 8 ohms, the 550A is perfect for smaller setups or compact spaces. Its Simple and elegant design hides sophisticated technologies aimed at achieving high-performance output. The amplifier features a high-quality pre-amp section, making it versatile enough to accommodate various audio sources, including vinyl players, CD players, and digital streaming devices.

Both amplifiers feature a solid metal chassis that minimizes vibrations, preserving sound integrity. They also come equipped with multiple inputs, allowing users to connect different sources easily. The 650A and 550A include tone controls to customize the sound signature according to personal preferences, and discrete circuit design to enhance signal clarity further.

Additionally, both amplifiers showcase Cambridge Audio's commitment to user-friendly design principles. With intuitive controls and a clear display, users can enjoy a hassle-free experience, whether adjusting settings or switching sources.

In conclusion, the Cambridge Audio 650A and 550A integrated amplifiers exemplify the brand's dedication to high-quality audio performance. With advanced technologies, robust power, and versatile connectivity, these amplifiers cater to a broad range of listening preferences and environments, ensuring that music is experienced as the artist intended. Whether opt for the powerful 650A or the conveniently efficient 550A, users can expect an unparalleled audio experience that elevates their musical journey.