What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

Cambridge 540A v2

Cambridge 540A v2 - High performance integrated amplifier
 For these version 2 models we have been able to further improve the audio quality and make them more powerful through many detailed changes and enhancements developed as a result of our on-going research programme. We have also added some new features, including support for Multi-Room use. All this proprietary engineering is housed within our low resonance, acoustically damped chassis. An Azur Navigator remote control is also provided, giving full remote control of four amplifier in an attractive and easy to use handset.
The 540A V2.0 features a new preamp stage with buffered inputs for lower crosstalk and improved stereo imaging, whilst the headphone output is now provided be a separate Class A headphone driver circuit. The amplifier stage has been revised with new low-noise input transistors, special driver stage PSU regulation, a new voltage amplifier topology and separate current sources for the voltage amplifier and predriver stages. These enhancements to the original circuits all work to elevate the sound quality to a new level. A new heatsink and transformer are employed and the power output is now 60 watts per channel (from 50 wpc on the V1 model).

With output at 60 watts per channel, the 540A Version 2 is a clear leader in budget amplifier circles offering a huge number of features and a build quality to embarrass more expensive rivals.
The 540A features full remote control and dedicated multi-room connections.
Other features:
60 watts Power output at 8 Ω
Amplifier type Class AB
Incognito Ready multi-room outputs
Tape and 5 analogue inputs
Headphone socket
Special CAp5 protection circit
Premium 3-way binding posts
Azur navigator remote control
All metal construction with Black or Silver Finishes

Power Output:
60 watts (into 8Ω)
90 watts (into 4Ω)
THD (unweighted)
Less than 0.002% at 1 kHz, of rated power
Less than 0.070% from 20Hz - 20 kHz, of rated power
Less than 0.025% from 20Hz - 20 kHz at 10 W
Frequency Response:  5 Hz - 50 kHz (-1 dB)
Signal-to-Noise Ratio (ref 1w):  better than 85 dB
Input Impedances:  47 k Ω
Power Amp Damping Factor:   better than 100 W
Max Power Consumption:  650 W
Min/On Power Consumption:  less than 35 W (no signal)
Standby Power Consumption:  less than 10 W
Bass/Treble Controls:  Shelving, ultimate boost/cut  ±7.5 dB (at 20 Hz and 20 kHz)
Dimensions (W x H x D): 430 x 100 x 310 mm (16,9 x 3.9 x 12.2”)
Weight:  7.4 kg (16.3 lbs)

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