Offers information about speakers, subwoofers, midrange, tweeters and crossover, and links to reviews and forums.

Gives general considerations on how to select a product and which features are useful.

Concentrates on where to buy and shop for products, but also has staff-produced buying guides for over 200 products. Some of the guides are links to other buying guide sites. Accepts no payments for listings.

Consumer-generated reviews, buying tips and advice, ratings, price information, and searchable in a variety of ways from price to product type.