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Computer Audio Design

CAD GC3 Ground Control

Over the past 10+ years the amount of high frequency noise on our Mains power has increased dramatically due to the use of computers, routers, modems, wifi, switch mode power supplies, etc. The high ...

Brand: Computer Audio Design
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£3,995.00

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Over the past 10+ years the amount of high frequency noise on our Mains power has increased dramatically due to the use of computers, routers, modems, wifi, switch mode power supplies, etc. The high frequency noise that is generated within our audio systems has also increased: DACs, Servers, Computers, NAS drives, Routers, WiFi, etc. are all connected directly to our audio systems. CAD believes that one of the key reasons so many digital audio products “sound digital” is due to this high frequency noise. From the very beginning of CAD we have worked hard to reduce unwanted noise in all our products. Materials and technologies that are used in our 1543 MKII DAC, USB Cables and CAT are included in the GC1, GC3 and GC-R Ground Controls.


Over the past 10+ years the amount of high frequency noise on our Mains power has increased dramatically due to the use of computers, routers, modems, wifi, switch mode power supplies, etc. The high frequency noise that is generated within our audio systems has also increased: DACs, Servers, Computers, NAS drives, Routers, WiFi, etc. are all connected directly to our audio systems.

CAD believes that one of the key reasons so many digital audio products “sound digital” is due to this high frequency noise. From the very beginning of CAD we have worked hard to reduce unwanted noise in all our products. Materials and technologies that are used in our 1543 MKII DAC, USB Cables and CAT are included in the GC1, GC3 and GC-R Ground Controls.

The Ground Control contains a mixture of materials that converts high frequency energy into heat. Our research has found that to achieve the best sound quality the GC1, GC3 & GC-R needed to be effective over a large frequency range. This was not easy to accomplish! The CAD Ground Controls will substantially reduce noise from very high KHz range up to over 10 GHz.

There are two independent voltage references in any audio system:
1) Signal Ground
2) Earth

Earth is what the third pin on your mains plug is connected to and what your copper pipes in your house are connected to. Earth is not typically (but occasionally is) connected to the Signal Ground in higher quality audio components.

Signal Ground is the negative side of an RCA, XLR, USB etc. connector.

Most audio engineers put a lot of effort into making sure the positive and negative rails of their DC power supplies have low ripple and noise, adequate bandwidth, etc. but typically not much thought is put into the signal ground plane.

CAD believes that reducing high frequency noise on Signal Ground and Earth improves sound

GC3 Dimensions are:
356 (L) x 458 (W) x 89 (H) mm
Weight: 16KG

Supplied with 2 cables of customer's choosing

Computer Audio Design

Computer Audio Design does one thing and does it well they produce DACs that are hand-built from the ground up and designed from a standpoint of working well with a computer. If you’re looking to get the most out of your digital music collection then you’re going to need a DAC which is up to the task, and that’s where Computer Audio Design can help. Founded by Scott Berry, the CAD DAC is aimed solely at computer music listeners who are looking to get the best from their systems. 

The CAD DAC takes a focused approach in that it only has one USB input as well as a single set of unbalanced RCA outputs in order to create as few components in the signal path as possible. As well as being designed for high-resolution digital music the CAD DAC features a modular design which allows for future upgrades and updates to help futureproof it. 

If you’re looking to get the best sound from computer audio sources then the CAD DAC is the automatic choice for you. View their latest DAC below and to find out more get in touch with our knowledgeable team today on 01865 790 879.