Cambridge Audio 840C 6Control Bus, 7Digital outputs, 8& 9 Digital Inputs, 10Unbalanced Audio Out

840C Upsampling compact disc player

6Control 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.

7Digital outputs

The digital outputs allow a separate DAC or digital recording device to be connected. The sophisticated DSP software in the 840C even allows these outputs to be set to output raw (pass through) or upsampled data independently from the main audio outputs. Refer to the ‘Operating instructions’ section for more information.

S/P DIF CO-axial Digital - To obtain best results, use a high quality 75 ohm digital RCA interconnect cable (not one designed for normal audio use).

Toslink Optical Digital - Use a high quality TOSLINK fibre optic interconnect cable designed specifically for audio use.

Only one of the two output types should be used at a time.

8& 9 Digital Inputs 1 / 2

The digital inputs allow the digital outputs of other source components to be connected to the 840C. The 840C can then act as a very high quality upsampling DAC, improving the sound quality of the connected sources. Two digital inputs allow two external sources to be connected:

S/P DIF CO-axial Digital - Use a high quality 75 ohm digital RCA interconnect cable (not one designed for normal audio use).

Toslink Optical Digital - Use a high quality TOSLINK fibre optic interconnect cable designed specifically for audio use.

Only one of the two input types for each input should be used at a time.

10Unbalanced Audio Out

Single-ended conventional stereo outputs for connection to the line-level phono/RCA inputs of an amplifier.

11Balanced Audio Out

The 840C also features true balanced (XLR) outputs. This is a higher quality output that can reject noise and interference in the cable when used with equipment with balanced inputs. XLR connectors should be wired: Pin 1 - Ground; Pin 2 - Hot (in-phase); Pin 3 - Cold (phase- inverted).

Azur upsampling compact disc player 7