Cambridge Audio 840A Code List

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840A v2.0 Amplifier 

 Remote Control Codes 

All Codes are RC5 format. 

System Code = 16   

Key 

Command Code (decimal) 

Input 1 

4 

Input 2 

5 

Input 3 

3 

Input 4 

1 

Input 5 

2 

Input 6 

0 

Input 7 

6 

Input 8 

7 

Vol - 

17 

Vol + 

16 

Mute toggle 

13 

Amp on 

14 

Amp off (Standby) 

15 

Standby toggle 

12 

Mute on 

50 

Mute off 

51 

Speaker Select 

20 

Mode 21 

Bright 18 

Source Up 

8 

Source Down 

9 

Speaker select A 

28 

Speaker select B 

29 

Speaker select A + B 

30 

Note the Discrete Mute On and Off and Power On and Off codes which don’t 

have dedicated buttons on the remote are also actually available from the 

remote by special procedure, see product manual 

Information in this document has been carefully checked for accuracy; however, Cambridge Audio's policy is 

one of continuous improvement, therefore design and specifications are subject to change without prior 

notice. If you notice any errors please feel free to email us at: 

support@cambridgeaudio.com

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© Copyright Cambridge Audio Ltd 2008