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The SAT is the nation’s most widely used college admission exam. Learn more about how the SAT can help you show colleges what you know and what you know you can do.

Home page. Digital Recordings provides high-tech audio solutions to meet the everyday needs of individuals and industry.

Comprehensive home theater product reviews, tech articles, buying guides, and consumer electronics news! Get the latest equipment reviews and tech info on HDMI 1.3 A/V receivers and processors, HD DVD, Blu-Ray and more.

Audio Precision makes the 2700 Series, the highest performance audio analyzer in the world and the APx Series, the only dedicated multichannel audio analyzer in the audio test market.

TestFreaks collects all reviews for the hottest gadgets and consumer electronics. Reviews from the best professional sources.

Music production, music software reviews, recording, record production, in-depth music audio hardware reviews, monthly Steinberg Cubase, Apple Logic, Propellerhead Reason, Ableton Live, Cakewalk Sonar, Digidesign Avid Pro Tools, music creation tutori...

Tests your audio equipment, speakers, room acoustics and hearing. Audio signals and test tones playable online. High resolution sound test files available for free download.

YouTube is a place to discover, watch, upload and share videos.

University of California Television provides informational, educational, and enrichment television programming to the public and draws upon the vast intellectual, scientific, and creative talents of the University of California.