Peak is a digital audio editing application for the Macintosh, used primarily for stereo/mono recording, sample editing, loop creation, and CD mastering. It is commonly used by amateur and professional audio and video editors, mastering engineers, musicians, sound designers, artists, educators, and hobbyists.^[1]

It was published by the now defunct company BIAS Inc. in several editions, with varying levels of features.

Peak differs from Digital audio workstation-type audio editing applications in that most of its editing is done directly at the file level, without having to first create a project and import the audio to be edited into it.

Peak can be assigned to many DAW-type applications as a supplemental external sample editor. When used this capacity, it is similar to having Peak's editing capabilities available as a plug-in, within the other application.^[2]

BIAS Inc. ceased all business operations as of June, 2012.

• BIAS Peak Pro 6 XT review Sound on Sound magazine (January 2009)
• BIAS Peak v5 review Sound on Sound magazine (July 2006)
• BIAS Peak v4 review Sound on Sound magazine (May 2004)
• BIAS Peak v3.1 review Sound on Sound magazine (January 2003)
• BIAS Peak v2.02 review Sound on Sound magazine (June 1999)
• BIAS Peak v1.6 review Sound on Sound magazine (October 1997)
• BIAS Peak v1.0 review Sound on Sound magazine (September 1996]

• Adobe Audition
• DSP-Quattro
• Sound Studio
• WaveLab

• Peak User's Guide
• Peak web page
• Peak User Forum
• David M. Rubin (2005). Power tools for Peak Pro: a complete guide to the Mac's most powerful audio editor. Hal Leonard Corporation. ISBN 978-0-87930-847-6.