• All rights reserved.

  • All technical information is provided for better understanding of the principles of the respective designs, components, and systems and are for use by DIY enthusiasts and educational purposes only.

  • Schematics from other sources are shown for illustration purposes only, and remain the intellectual property of their respective creators.

  • Any non-commercial application of the information provided is at the reader's own discretion and responsibility.

  • These designs and other information may be used to construct systems specifically for personal NON commercial use only.

  • Commercial use without written consent (and the payment of royalty fees) is strictly prohibited.

  • Audiophonics is the registered Trade Mark of Susan Parker (GB Class 9).


As of 2009 I now have Audiophonics as a registered limited liability company (i.e. Audiophonics Ltd), which is dormant until such time as I actively start selling audio products as a commercial venture.

Audiophonics Ltd. (company registration number: 06901366).

Registered Office: 2ND FLOOR 145-157 St John Street, London, EC1V 4PY, GB

Please note that (unless you are HMRC) letters etc. sent to the above registered office address will NOT be forwarded whilst the company remains dormant. If you want to send me something please get in touch and I can supply you with a postal address. Thanks you.


Email: susan@audiophonics.com

All design and other information, drawings and images on this website are
Copyright 1992-2010 Susan Parker MIET (unless otherwise credited).

These designs and other information may be used to construct systems specifically for personal NON commercial use only.

N.B. Personal liability disclaimer applies - see T&C.