Offers consumer-generated product reviews, ratings, prices for brands and models.

Photo album and text of a visit to Intelligent Audio Systems, a start-up audio company founded by industry veteran Ken Kantor.

A privately owned picture and electronic music studio. A composition workshop for contemporary music.

Focuses on indoor FM antenna design and a Hafler circuit for surround sound. Also, includes a directory of related links.

A vintage high-fidelity portal for discussing and displaying classic and vintage amplifiers, tuners, turntables such as Thorens, Quad, and pick-up arms. Also, provides a classified listings.

Focused on vintage stereo tuners. Site includes reviews of many different tuners, provides explanations of how tuners work, explains about tube tuners, and notes alleged fraudulent online auctions.

Discussion forum on audio, amplifiers and home theater.

Home theater and audio community with product reviews.

Focused to stereo high-fidelity, including tube audio, home theater, and especially vintage 1970s gear, even vintage TV receivers. Site offers discussion forums, help, and general information for the audio enthusiast.

Offers reviews and evaluations of headphone equipment. Includes a buyers guide.