This newly revised directory brings readers up to speed on the latest in cutting-edge audio equipment. Included are updates on multi-channel music reproduction, surround sound, DVD-Audio, and Super Audio CD. Extensive tips on how to listen critically and judge audio-equipment quality, how to optimise the performance of an existing system, and how to best allocate an audio budget are included. Practical techniques for improving the acoustics of existing stereos and listening rooms are also featured.