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CDC eight-32



CDC eight is Cadac’s flagship digital live sound console. Designed specifically for the highly demanding worlds of concert touring and fixed installation, Cadac has taken a highly innovative approach to the user interface. Gone are the multiple strips of restrictive fixed physical controls found on conventional analogue and a majority of digital consoles. These are replaced with an intuitive “high agility” user interface accessed by 24 inch touch screens. The console has been designed to be far less menu dependent than other digital consoles resulting in a fast, logical workflow. The CDC eight really is exceptionally smart, nimble and intelligent in operation without the compromises dictated by more hardware-centric designs.


The combination of the exceptional user interface with legendary Cadac mic-pre’s, and state-of-the art DSP and FPGA processing technology, makes the CDC eight a unique proposition for those who do not want to be faced with audio or creative compromises.


The most striking feature of the CDC eight are the 24 inch 16:10 high definition LCD touch screens, surrounded by digital encoders, which display the clean and logical graphical user interface.


This arrangement naturally leads to an instinctive use of contemporary touch and traditional encoders to access the features on the console. First time users will soon find themselves navigating the features by using gestures familiar to those for navigating a tablet device, with very little formal training.


An additional centrally-located 6 inch LCD touch screen provides quick access to the advanced system controls and automation functions.


The CDC eight is available in two formats; the dual screen 32 fader console and a smaller, single screen 16 fader version, both are identical in capacity and capability. For those requiring more faders or have space issues or simply need a remote mix location, a single screen 16 fader CDC eight-16S side car is also available.


All versions are housed in a beautifully engineered, road ready chassis, complete with milled aluminium side cheeks and classical“warm to the touch” wooden arm rest.


The high precision motorised 100mm input faders have a reassuring feel and follow the scrolling of the inputs on the screen, ensuring full control at all time of any combination of inputs displayed on the screen.



Hardware summary

  • Two frame sizes: dual screen, 32 fader or single screen, 16 fader
  • Single screen 16 fader extender
  • 24” high definition anti-glare touch screens
  • Intuitive, clear graphical user interface
  • Proprietary DSP mix platform
  • 32/40 bit floating point SHARC processors
  • 6” LCD touch screen for system control
  • 100mm accurate, quiet motorised faders



Feature summary

  • Classic Cadac mic-pres
  • Sub 0.4 millisecond latency from analogue inputs on stage to analogue outputs on stage  
  • Library of multiple languages for console labelling
  • 128 input channels
  • 4 band fully parametric EQ
  • Extensive dynamics
  • 64 output busses
  • Assignable busses - Group, Stereo Group, Aux, Stereo Aux or Matrix
  • 16 VCA groups
  • 8 Mute groups
  • On board effects
  • 31 band graphic equaliser on all outputs
  • Compressor limiter on all outputs
  • Output delays
  • Snapshot automation

Audio Quality



Cadac’s digital consoles bear the hallmark of their analogue origins which can be traced back beyond the now legendary J-Type, which itself is still in production after nearly 25 years, to those classic consoles of the golden age of recording studios. The audio performance still retains its traditional wide dynamic range and low noise floor through a combination of unique analogue emulating algorithms and the latest 24-bit / 96 kHz Delta Sigma AD/DA convertors.


Another key to the Cadac sound is the attention paid to delay management – a major factor in digital audio performance and over looked by a majority of other digital consoles.


All digital processing takes time to actually process audio. When combining signals with different paths and processing most digital consoles when summing the multiple signals will be partly out of phase. Cadac digital consoles have an extensive automatic latency management system. This manages all internal routing and associated processing latency which means that all audio samples are synchronised before summing, resulting in absolute phase coherency at all outputs.


Cadac’s MegaCOMMS network has sub 0.4 millisecond latency from analogue input on stage, through the console, to analogue output on the stage. This makes it perfect for in-ear monitoring. All inputs and all outputs are time aligned to sample accuracy, no matter the routing or where they are located in the network.


Feature summary

  • Over 45 years of Cadac audio knowledge
  • Comprehensive and automatic latency management system
  • Comprehensive automatic time alignment
  • Sub 0.4 millisecond latency from analogue inputs on stage to analogue outputs on stage
  • 24-bit / 96 kHz Delta Sigma AD/DA convertors




The CDC eight helps make life a little easier by being multilingual. The console has a library of languages for labelling the console. By simply selecting your preferred language you can label the Inputs, VCAs etc in your local language making the console a much friendlier place to work. Another barrier to the creative process has been removed.

  • Library of languages includes Chinese, English, French, German, Portuguese, Russian and Spanish with more to be added
  • Ability to have user labelling in one language and control labelling in another



mic pre

For decades Cadac’s analogue mic-amps have been considered by many to be the premium mic-amp in the live sound industry. Cadac’s digital consoles proudly bear the hallmark of their analogue origins which can be traced back beyond the now legendary J-Type to those classic Cadac consoles from the golden age of recording studios.


The CDC eight audio performance still retains the traditional wide dynamic range and low noise floor which has been achieved through a combination of unique analogue emulating algorithms and the latest 24-bit / 96 kHz Delta Sigma AD/DA convertors. The result is the classic Cadac sound - clean, transparent, and musical.

  • 45 years of Cadac engineering heritage
  • Wide Dynamic range
  • Low Noise Floor
  • 24-bit / 96 kHz Delta Sigma AD/DA convertors




A major contributor to why Cadac digital consoles sound so clean and transparent is the attention paid to delay management – a major factor in digital audio performance and over looked by a majority of other digital consoles. All digital processing takes time to process the audio.


When combining signals with different paths and processing, most digital consoles will be summing multiple signals which will be partly out of phase. Cadac digital consoles have an extensive automatic latency management system which manages all internal routing and associated processing latency, resulting in all audio samples being synchronised before summing and providing absolute phase coherency at all outputs.

  • Automatic latency management
  • Absolute Phase Coherency
  • Sample-accurate summing
  • Sub 0.4 millisecond latency from analogue inputs on stage to analogue outputs on stage 




The operational feature which dominates the CDC eight console are the 24 inch 16:10 high definition LCD touch screens which provide the operator with an exceptionally clean and logical graphical user interface (GUI). The channel selection is just a simple case of swiping the screen to move the 128 channels seamlessly either left or right. Once the desired channel is reached a touch of the screen brings up the clean and simple GUI for the required function. There are no layers or clunky block scrolling.

  • Swipe to scroll through all 128 channels
  • Clean and logical graphical user interface




The EQ section features 6 bands, comprising a four band parametric section and low and high pass filters. All six bands can be independently switched in and out or the whole EQ can be bypassed with a master EQ bypass. The LF and HF bands of the EQ feature a Bell/Shelf option, and the EQ can be configured to either emulate the response and behaviour of the classic J-Type analogue filters, or to provide 4-band fully parametric operation on a per - channel basis.

  • 4 band fully parametric EQ
  • J-Type analogue filter option
  • Low and high pass filters




The dynamics processing on the CDC eight have been designed to provide a broad scope of possibilities to maximise the creative potential. The input dynamics consists of a gate and dual-mode compressor with side chain filtering, with classic or vintage modes of operation. Output dynamics processing features compression and limiting.


Control of both is achieved by simple touch access which will populate the screen with only relevant, concise control and visual information. The need to fiddle with sub menus or small, confusing graphics found on other digital consoles has been replaced with large touch friendly icons increasing the overall speed of operation and easing the workflow.

  • Dual-mode compressor, gate and sidechain filtering
  • Clear graphical interface
  • Simple workflow




The CDC eight has 16 on board effects units including many types of reverb, delay and modulation FX. These have been designed to operate within Cadac’s latency management ensuring that no matter where they are inserted or whether used on send and return basis they remain phase coherent. CDC eight features 16 stereo FX, each with reverb, modulation and delay modules, all of which can be used simultaneously, and freely configured by the user.


CDC eight features an optional Waves interface card which provides connectivity to the Waves MultiRack server, allowing any Waves plug-ins to be used simultaneously with the consoles own DSP FX options. The Waves GUI is displayed on the CDC eight’s touchscreen for viewing and editing.

  • Range of on-board effects
  • Latency management
  • Waves Integration




The CDC eight has many reassuringly familiar features. These include 8 programmable Mute Groups and 16 VCA Groups. However, Cadac’s unique approached to the user interface means that creating these user definable groups has been made incredibly easy and logical. Any input can be assigned to any VCA or MUTE group, or to multiple groups, with a simple touch of the screen. Both the input and the groups can be named using the labels from the consoles library or by using the on screen keyboard or an optional hardwired keyboard which sits in a dedicated drawer built into the chassis.


To give a clear picture of the structure of the VCA groups all 16 can be viewed at a glance on an overview screen showing all the inputs that contribute to each VCA along with the input meters.

  • 8 MUTE groups with simple configuration
  • 16 VCA groups with simple configuration
  • VCA overview screen with input contribution meters




The CDC has a total of 56 configurable busses, plus LCR, Monitors and talkback. All the configurable busses can be assigned as any combination of auxiliaries, groups, stereo auxes, stereo groups or matrix outputs depending upon the application with a simple touch of the screen. The bus sends can be individually set as Pre EQ, Pre Fader or Post Fader, and pre-or-post VCA. To help workflow the busses can be renamed from the pre-set library or with user defined names by using the soft keyboard and then added to a user library.

  • 56 configurable output busses
  • Assignable as Groups, Stereo Groups, Auxes, Stereo Auxes or Matrixes
  • User definable naming




All of the CDC eights output busses feature 4-band parametric EQ, plus HPF and LPF plus a 1/3 octave GEQ.


All parametric and Graphic EQ’s can be used simultaneously, without any concern about available processing power or tonality compromise. GEQ parameters can be easily viewed on the 24” touch screen in the form of a virtual GEQ, and adjustments made quickly using the consoles 100mm faders.


Additional features are GEQ in/out, an “instant flat” switch and a bypass function for individual GEQ filters.

  • 1/3 octave GEQ on all output busses
  • On screen GEQ graphical user interface
  • Control via 100mm faders




CDC eight features, as you would expect from Cadac, a comprehensive cue-based automation system which is capable of storing hundreds of cues within each show, and has the ability to import and export projects to/from USB keys and to archive and edit productions on external computers. Due to the dynamic nature of live events, the operator will need the ability to intervene in the recall process as changes to the programme occur in real time. To facilitate this in the simplest possible way, the CDC eight onboard automation includes three discrete levels of automation isolation or “safe” status.


Cadac virtually invented automation for live sound consoles. Most major Broadway and West end Theatre shows were designed around the prodigious capabilities of Cadac’s SAM (Sound Automation Manager) software, so when it comes to investing in an audio console which has the ability to reliably deliver a perfect performance night after night, you need look no further than Cadac’s superb-sounding CDC eight.




SAM’s features have been developed in conjunction with the Theatre world’s leading sound designers over a number of years, so everything you could possibly need to produce a flawlessly repeatable show will already be present in the software. Advanced functionality such as Dynamic Mixing and X-Act render complex programming easy, and the updated SAM GUI ensures operation is quick and simple, both online during a show, or offline while configuring a production without the benefit of having a console available.


Powerful, complex audio console automation can be daunting if an operator is unfamiliar with its capabilities, so Cadac’s SAM console automation software can be run on an external PC computer for ease of editing and previewing, and users can have absolute confidence in the consoles stability.

  • On-line and off-line operation of SAM software
  • Console automation controlled onboard and/or by external PC
  • Comprehensive MIDI control for 3rd party devices
  • Dual-redundancy of show automation available




The CDC eight has two external switch mode power supplies. The result is the control surface is very quiet in operation making it ideal for noise sensitive environments such as theatres where the ambient noise levels needs to be very low. These 2U units are connected to the console via shielded multicore cable with circular military bayonet connectors at each end. The console can then be powered from two independent power supply systems, operating simultaneously for continuous redundant operation.





MegaCOMMS is Cadac’s proprietary digital interconnect protocol which provides extremely low latency, robust error correction and advanced system clocking. The protocol provides up to 128 bi-directional channels of 96 kHz / 24-bit audio along with all control data and clock synchronisation. This is all carried on co-axial cable with runs of up to 150 meters (492 feet). The benefit of combining audio, control, and clock into one single network simplifies connectivity, shortens set-up time and reduces investment in cabling infrastructure.


Cadac’s MegaCOMMS digital network allows the audio infrastructure to be designed to meet the requirements of the most challenging applications. With a choice of local I/O cards, stageboxes and audio network bridges plus a dedicated router to handle the dynamic management of the audio, the network can be as complex or as simple as required. With sub 0.4 milliseconds from analogue inputs on stage, through the CDC eight, to analogue outputs on stage this incredibly low latency makes it perfect for applications such as in-ear monitoring.

I/O Expansion


Local I/O

The CDC eight-32 and the CDC eight-16 have 8 user configurable card slots on the rear of the surface for local I/O. These can be configured with any combination of the following 5 cards to suite user application providing up to 64 inputs / outputs.


I O Cards

CDC-XLR4-O: Analogue Output card

  • 4 analogue XLR outputs with “no audio” mute and remote “check” LEDs on a single card
  • High-current drive capability for long cable runs
  • 24-bit / 96 kHz Delta-Sigma AD/DA converters maintain audio integrity


CDC-XLR4-I: Analogue mic/line Input card

  • 4 analogue mic/line inputs featuring Cadac remote control mic-preamps on a single card
  • With +48 V and “check” remote indicators
  • 24-bit / 96 kHz Delta-Sigma AD/DA converters maintain audio integrity


CDC-TRS8-I: 8 TRS analogue line Input card

  • 8 line level inputs on a single card
  • All balanced TRS sockets


CDC-TRS8-O: 8 TRS analogue line Output card

  • 8 line level inputs on a single card
  • All balanced TRS sockets
  • “No audio” mute LEDs


CDC-AES4-I/O: Digital AES/EBU Input and Output card

  • 2 x 2 inputs and outputs on a single card in 2 AES/EBU in/out pairs
  • Inputs feature sample rate converters and sync to external clock
  • Outputs feature sample rate converters, selectable word length and choice of clock (internal 96 kHz, 48 kHz or external)




There are two fixed format Cadac stageboxes with MegaCOMMS connectivity which provide inputs and outputs up to 150 metres from the console.


The CDC I/O 6448 features 64 superb Cadac mic inputs and 48 analogue outputs. Additional features are dual-redundant MegaCOMMS ports, front panel metering and status indication and dual-redundant power supply option.


The CDC I/O 3216 has 32 mic inputs and 16 analogue outputs, and offers greater flexibility of I/O deployment. Two stage boxes can be connected directly to the rear of the console but up to eight units can be added with the CDC MC Router, creating a large MegaCOMMS audio network.


The CDC eight automatically detects I/O units, and patching is simply achieved by a touch on the screen. Each input and output on the unit can be “flashed” from the console making identification incredibly easy on the stage.

  • 8 local configurable card slots with a choice of 5 cards
  • Fixed format stage boxes with up to 64 inputs and 48 outputs
  • Stageboxes located up to 150 metres (496 feet) from console
  • Network up to 8 stageboxes



Genaral Specifications CDC eight-32
Faders 32 x 100mm motorised fders
Screens 2 x 24" HD Touchscreens
PSU 1 x external 19" 2U rackmount PSU
(option to add second external 19" 2U rackmount PSU with full redundancy
Inputs Up to 310 (inc local IO)
Channels 128 with full processiing
Busses 64 - 56 configurable in pairs as group/aux/st aux plus dedicated LCR, monitor LR, headphones LR and talkback
Matrix Up to 32 x 32 with full processing
Outputs Up to 196 (inc local IO)
Graphic EQ 32 band +/-16 dB on all 48 outputs
Internal FX 16 high-resolution 96 kHz stereo efects processors
Local IO Up to 8 cards in any combination. Optional cards include 8 x TRS balanced line inputs, 8 x XLR mic input (uses 2 slots) and 8 x TRS balanced line outputs
Comms 2 x Cadac MegaCOMMS

Audio Specification
Sample Rate 96 kHz
Processing Delay Sub 0.4 millisecond latency through complete signal chain
Internal Processing 40-bit floating point
ADC/DAC 24-bit
Frequency Response 20 Hz to 44 kHz + 0.5 / -1.5 dB
THD+N better than 0.005% @unity gain, 10 dB input at 1 kHz
Channel Seperation better than 90 dB
Residual Output Noise < -90 dBu (20 Hz - 20 kHz)
MIC EIN < -127 dB with 200 Ohm source impedance
Maximum Output 21.8 dBu
Maximum Input 21.8 dBu


CDC eight-32


1631.9mm wide (64.25”) x 425.7mm (16.76”) high x 900.4mm (35.44”) deep



110 kg / 245.5 lb


CDC PSU 4800 External power supply

482.60mm wide (19”) x 88mm (3.46”) high x 400mm (15.75”) deep


10 kg / 22.05 lb