Cambridge Audio 840A (Version 1) Class XD™ integrated amplifier
Cambridge Audio made a significant leap forward with the introduction of the Azur range in 2003 by pushing the boundaries of what was possible in the budget audiophile segment of the market. However, they were also keen to produce a high-end product range which allowed them to flex their engineering muscles and show what can be done with fewer constraints. A number of development programs burgeoned while working on the original and V2 Azur ranges of which the 840A Class XDTM integrated amplifier was one, part of Cambridge Audio's then new 8-Series.
A number of ideas came to the forefront, including the implementation of full microprocessor control for all functions, nameable inputs and AV mode, custom install features such as RS232 and outputs for Cambridge Audio's own Incognito multi-room system. But above all, the unit had to be a true audiophile product in that sound quality was paramount.
Cambridge Audio engineers decided the 840A should in fact be a pre-amplifier and dual-mono power amplifier all in one chassis. It should also have a balanced input for the matching CD player (of which more in a separate white paper), two pairs of very high current output transistors per channel so it could drive any speaker, a new acoustically damped casework and relay switching for input selection. A relay/resistor ladder volume control scheme for excellent channel balance and low distortion was also designed.
People Matter as Much as the Music
Cambridge Audio prides itself on employing the finest staff and is lucky enough to have Douglas Self, the renowned writer, designer and amplifier researcher working in their engineering team. When Doug joined Cambridge Audio he already had the seed of an idea to develop a new amplifier topology and it wasn’t long before he’d pitched them his ‘brave new idea’ and what was to become the Class XD™ development program began. The Cambridge Audio 840A (Version 1) is the first ever Class XD product and the result of over two years development work.
Awards and Reviews Speak for Themselves
Since the Version 1 release of the Cambridge Audio 840A integrated amplifier; numerous awards and accolades have been garnered. Now's your chance to own a piece of audio history!
You'll want to hurry because we have a very limited quanity of these special purchase Version 1 units available. And at this great price, we're certain they won't last long!
840A (Version 1) Performance Specifications
- Power Output: 120 watts per channel (8 ohms)
- 200 watts per channel (4 ohms)
- Input Impedance: Input 1 (balanced)10 kOhm
- Inputs 2-7 68 kOhm
- Tape input 68 kOhm
- THD (unweighted): < 0.0015% 1 kHz at 80% of rated power
- < 0.015% 20 Hz - 20 kHz at 80% of rated power
- Frequency Response: 10 Hz - 50 kHz +/- 1 dB
- Signal to Noise Ratio: >83 dB
- Power amp damping factor: > 110 at 1 kHz
- Bass: Max bass boost/cut +/- 10 dB at 10 Hz
- Treble: Max treble boost/cut +/- 7.5 dB at 20 kHz
- Max. Power Consumption: 800W
- Min. Power Consumption: Active (no signal) 70W
- Standby 7W
- Dimensions (H x W x D): 115 x 430 x 385mm
(4.5 x 16.9 x 15.2”)
- Weight: 15.0kg (33 lbs)
Cambridge Audio ... Sharing your passion for music and movies
Cambridge Audio has been at the forefront of British hi-fi for more than thirty five years. Since its inception in 1968, Cambridge Audio has brought some of the most innovative and technologically advanced products to market.
During the ‘70s, the P40, P50 and P110 amplifiers established the international reputation of the Cambridge Audio brand. The ‘80s saw Cambridge Audio launch the world’s first two-box CD player. In the ‘90s, the DacMagic was the first product in the company’s history to win an esteemed What Hi-Fi? Sound and Vision Best Buy award. The new Millennium saw Cambridge Audio continue to innovate with its award winning DAB digital tuners and of course the highly-acclaimed Azur range which has produced many now legendary products like the famous 840c CD Player.
Cambridge Audio has a philosophy of using only the finest quality components, all models are developed using state-of-the-art test and measurement equipment and feature the latest technology. This commitment to engineering excellence, combined with state of the art manufacturing facilities, means every Cambridge Audio product offers the best possible performance. Prior to launch, all designs undergo rigorous evaluation involving meticulous listening and fine tuning.
But the main reason for Cambridge Audio's success... their people. Cambridge Audio employ's nearly 80 people, the majority at their London headquarters, including over 20 engineers in a dedicated research and development facility. Every member of Cambridges' team shares the same passion for hi-fi and home cinema as you – our customers. That’s why they always go the extra mile to make sure we only produce products we're proud enough to take home – and trust us they absolutely do!
