[1] His bass sound is recognized by the aggressive picked tone he developed with his Chris Squire Signature Rickenbacker 4001CS, which can be heard on Tool's first full-length album, Undertow.

The band achieved mainstream success due to Undertow, fueled by the charting singles "Sober" and "Prison Sex".

"[7] After his departure from Tool, he formed the psychedelic pop band Lusk with Brad Laner, Chris Pitman (future member of Guns N' Roses), and Greg Edwards of Failure and Autolux.

[8] In addition, D'Amour played guitar in a group named Replicants, a cover band that included Ken Andrews and Greg Edwards from Failure, as well as Chris Pitman.

The group consists of Andrew Zamudio (vocals), Brett Fanger (guitar), and Justin Hanson (drums).

[13] As of late March 2019, D'Amour joined Ministry as the band's newest bass player,[2] replacing Tony Campos.