Cambridge Audio 640A, 540A 6Multi-room, 7Control Bus, 8Pre-Out, 9Tape In, 10Record Out 1/2

540A/640A V2.0 Integrated amplifier

6Multi-room

PSU - Connect an Incogntio PS5 to supply power to the connected multi- room keypads/speakers.

Keypad 1/2 - Connect one or two Incogntio A-BUS KP10 keypads (or other A-BUS compatible keypads) using CAT5/5e cable. Incognito AS10 Active Ceiling Speakers can also be connected here.

IR - Four IR outputs for remote control of source equipment.

Please refer to the ‘Multi-Room’ section of this manual for more information on connections and set-ups.

7Control Bus

In - Allows un-modulated commands from multi-rooms systems or other components to be received by the unit.

Out - Loop out for control bus commands to another unit.

8Pre-Out

Connect these sockets to the inputs on an external power amplifier(s) or active subwoofer etc.

9Tape In

Connect to a tape deck or to the analog output sockets on a MiniDisc, portable digital music player or CD recorder using an interconnect cable from the recorder's Line Out sockets to the amplifier's Tape In sockets.

The Tape Input circuit of the 540A/640A V2.0 is a "monitor" type, different from the other 5 inputs. For the 5 normal inputs, the source selected for listening to will be sent out of the Rec 1/Rec 2 outputs for

recording. The source currently being listened to and (optionally) recorded is then shown on the front panel by a corresponding blue LED.

However, when the Tape Mon Input is selected a second LED will illuminate indicating that the Tape Monitor Input is now being listened to with a different source being sent out of the Rec1/Rec2 outputs for recording. The recording source is shown by the first LED and can be changed by pressing the other source buttons. To switch Tape Monitor off, simply press the Tape Mon button again, toggling this function off.

This feature is most useful when using 3-head analog cassette decks which allow the signal being recorded to be played back live off tape (via a 3rd head) whilst it is simultaneously recorded. It is then possible by toggling the Tape Monitor input on and off to compare directly in real time the original and recorded signal so that adjustments to the recording parameters of the tape machine can be made (consult the manual of your 3-head analog cassette deck for full details).

10Record Out 1/2

These two identical output sockets can be connected to a tape deck or to the analog Record In sockets on a MiniDisc or CD recorder.

11DMP/MP3, DVD, Tuner/DAB, CD, Aux

These inputs are suitable for any 'line level' source equipment such as digital music players (DMP) and MP3 players, CD players, DAB or FM/AM tuners etc.

Note: These inputs are for analog audio signals only. They should not be connected to the digital output of a CD player or any other digital device.

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