
| Second generation proprietary Class XD technology |
| 120W per channel into 8 Ohms or 200W per channel into 4 Ohms |
| Oversized low flux toroidal transformers |
| Completely separate pre-amp and power amp toroidal transformers and circuits make the 840A effectively a pre and power amplifier combination in one chassis |
| Sophisticated resistor ladder and relay based attenuator for extremely accurate volume/balance control |
| Two pairs of very high current output transistors per channel in revised configuration for improved integration with Class XD |
| Twin rectifiers and separate transformer taps for dual mono operation of the left and right power amplifiers |
| RS232 port, IR emitter In and Control Bus In/Out for seamless integration with custom install systems |
| A-BUS™ / Incognito™ Ready connections compatible with Cambridge Audio’s new Incognito multi-room keypads or other A-BUS compatible keypads allow the 840A to form the hub of a simple but highly effective 3 zone multi-room system |
| Fixed level inputs allow the 840A to provide the front channel amplification when integrated with home cinema systems that use an AV processor |
| Cambridge Audio proprietary CAP5™ protection system |
| 8 inputs one with balanced XLR connections in addition to single ended phono/RCA |
| Nameable inputs |
| Backlit LCD screen |
| Extruded aluminium side panels and solid aluminium front panel plus an ultra rigid, acoustically dampened chassis |
| Navigator style Azur remote which also controls o iPod™ track skip and volume functions o Azur CD players o Cambridge Audio’s Incognito keypads o Discrete commands for custom install use |
| Available in silver or black |
| 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) |

| Adaptive Time Filtering (ATF) asynchronous up-sampling technology converting 16-bit 44.1 kHz CD data to 24-bit 384kHz |
| 32-bit Analog Devices Black Fin DSP |
| Dual differential DAC configuration using high-end Analog Devices AD1955 DACs |
| Fully differential anti-aliasing topolopgy based on linear phase Bessel filters |
| DC servo circuitry with no capacitors in the signal path |
| Two digital inputs allowing up-sampling and playback of other sources |
| Digital outputs allow recording of up-sampled audio |
| Control Bus In/Out, IR emitter in and RS232 for easy multi-room compatibility |
| Extruded aluminium side panels and solid aluminium front panel plus an ultra rigid, acoustically dampened chassis |
| Navigator style Azur remote control which also controls Azur amplifiers |
| Available in silver or black |
| Frequency Response: |
20Hz - 20kHz +/- 0.1dB |
| THD @ 1Khz 0dBFs: |
<0.0008% |
| THD @ 1kHz -10dBFs: |
<0.0004% |
| THD @ 20kHz 0dBFs: |
<0.002% |
| THD @ (19/20kHz) 0dBFs: |
<0.0002% |
| Linearity @ -90dBFs: |
+/-0.5dB |
| Stopband rejection (>24kHz): |
> 120dB |
| Signal to Noise Ratio A-wtd: |
> 113dB |
| Total correlated jitter: |
> 130pS |
| Crosstalk @ 1kHz: |
> -130dB |
| Crosstalk @ 20kHz: |
> -114dB |
| Output impedance: |
> 50 ohms |
| Digital input word widths supported: |
16 - 24 bit |
| Digital output word widths supported: |
16, 20, 24 bit |
| Digital input sampling frequencies supported: |
32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz |
| Digital output sampling frequencies supported: |
32kHz - 192kHz pass through (including 44.1kHz for CD) 48kHz, 96kHz, 192kHz upsampled |
| Audio output up-sampling: |
Fixed 24 bit, 384kHz |
| Dimensions (H x W x D): |
115 x 430 x 360mm 4.5 x 16.9 x 14.7" |
| Weight: | 8.5kg (18.7lbs) |