Cambridge Audio 540A Specification Guide

Azur 540A and 640A integrated amplifiers

Specifications

Azur 540A

Azur 640A

www.cambridge-audio.co.uk

azur

Rated at 50 watts per channel (8

Ω

) and 65 watts per channel

(8

Ω

) respectively, both models contain an impressive array of

features and functions including; oversized torodial transformers,
short path circuitry and a raft of intelligent protection systems
designed to deliver performance that belies their highly
competitive prices. 

Both are housed in elegant, stylish aluminium cases, offering

low resonance as well as acoustically damped chassis.

Cambridge  Audio  introduces  two
new  muscular  power  sources  with
class-lleading  performance.

Power Output:

Input Impedance:
Loudspeaker Impedance:
Input Sensitivity:  

Line: 
Phono:  
(using optional phono stage)

Total Harmonic Distortion 
(into 8

Ω 80% rated power): 

Frequency Response: 
Tone Controls  

Bass:  
Treble:  

Signal to Noise Ratio: 
(No weighting)
Slew Rate (into 8

Ω): 

Max. Power Consumption: 
Dimensions (W x D x H) (mm):
Weight:

100 Watts 4

Ω

65 Watts 8

Ω

47k 

Ω

4

Ω to 8Ω

380mV 
1.75mV

0.005% THD (No weighting) @ 1kHz
0.003% THD (A weighted) @ 1kHz
0.01% THD (No weighting) @ 20Hz-20kHz
5Hz to 50kHz +/- 1dB 

+/- 10dB @100Hz
+/- 10dB @10kHz
92dB 

40V/uS 
615 Watts 
430 x 320 x 100
7 kg/15.4 lbs

80 Watts 4

Ω

50 Watts 8

Ω

47k 

Ω

4

Ω to 8Ω

330mV 
1.75mV

0.008% THD (No weighting) @ 1kHz
0.005% THD (A weighted) @ 1kHz
0.02% THD (No weighting) 20Hz-20kHz
5Hz to 50KHz +/- 1dB 

+/- 10dB @ 100Hz
+/- 10dB @ 10kHz
>92dB 

>30V/uS 
515 Watts 
430 x 320 x 100
7 kg/15.4 lbs

0604