Offers several discussion forums, articles, news and photos. Includes registration details.

Reference source on this classic electrostatic loudspeaker.

Support for acoustic research, repair and upgrade information, discussion forum, and links.

System gallery, online user manuals and maintenance information on Thorens turntables.

Roger was former Director of Acoustic Research for McIntosh Labs. Offers information and photos of McIntosh equipment.

A thorough unofficial resource for Nakamichi tape decks.

Unofficial site that focuses on this quartz PLL direct drive turntable developed in the 1970's. Learn more about technical specifications, history, photo gallery, parts and supplies.

Reviews of in-ear monitors and portable headphone amplifiers.

Collects information on past and present models of Hi-Fi and recording equipment along with links to, history and contact information for companies and individuals active in the field.

Devoted to high fidelity with special attention to vintage equipment and tube equipment. Topics include news, reviews, tweaks, gallery, articles, auditions, links. English and Spanish options.