Xerrox Vol. 1 is the third studio album by German electronic artist Alva Noto. It was released in 2007 as part of the ongoing Xerrox pentalogy, based on the concept of digital replication of source material.

Using the process of copying as a basis, the Xerrox series deals with the manipulation of data through endless reproduction. Due to the inherent fallacy of making copies from other copies, everyday sounds become so altered that they are hardly associated with their source material. As a result, entirely new sounds are created: copies of originals become originals themselves.

Together with Christoph Brünggel, Nicolai designed a "sample transformer" that takes audio fragments and manipulates them beyond recognition. In this process of taking something familiar and defamiliarizing it, samples from obvious sources-advertising jingles, airport tones, telephone hold music, and film soundtracks-were used and altered, resulting in sounds totally unlike their original source. The result is a series of haunting, intricately realised pieces that recontextualise Nicolai's "glitches and bass" sound into extended, cinematic, organic, and almost orchestral works.

Xerrox Vol. 1 was followed by Xerrox Vol. 2 (2009), Xerrox Vol. 3 (2015), Xerrox Vol. 4 (2020), Xerrox Vol. 5 (2024). This remastered version will be reissued on NOTON in 2026[info sheet from distr.]