Includes news and reviews. Plus a forum, polls and user feedback.

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

Offers news and reviews, classifieds, and discussion forum.

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

HiFi and music guide including equipment and music reviews, and related links.

A thorough unofficial resource for Nakamichi tape decks.

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.

Reference source on this classic electrostatic loudspeaker.

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.

Tribute to Audio Research Corporation (ARC) SP tube preamplifiers. Photos and description of SP-2, SP-3, SP-6, SP-8 preamps. Information about tubes, line conditioners and related topics.

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

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.

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

Offers a hub for exchanging information and swapping patches. Includes registration details.