Bright and Loud
- Resources for professional audio engineers.
- http://www.brightandloud.com

Zircon Designs
- Show control systems information from John Huntington.
- http://www.zircondesigns.com/

Harada-Sound
- Broadway sound designer's page dedicated to the art and science of sound. Offers sound design software, show descriptions, and a sound handbook.
- http://harada-sound.com

Grounding for Electronic Systems
- Lays out in detail the principles of proper grounding and shielding for audio systems, video systems, and data networks. Explains how to troubleshoot and correct problems such as ground loops and other electric faults.
- http://www.epanorama.net/documents/groundloop/index.html

Theatre Sound Mailing List
- Mailing list for people doing theatre sound.
- http://www.brooklyn.com/theatre-sound/

Theatre Sound Design Directory
- Directory of theatre sound design resources.
- http://www.show-control.com/tsindex.html