Tom Evans Audio copyright strike

In November 2024, YouTube creator Mend It Mark uploaded a video in which he repaired a MasterGroove SR Mk3 pre-amp made by Tom Evans Audio. In the video he took the pre-amp apart and - to help diagnose the issue - he reverse-engineered the device and created some schematic diagrams.^[1] He also made his viewers aware of the fact that the price of this pre-amp is £25,000 (about $30,000 USD) and that many of the electrical components in the pre-amp had their part numbers scraped off.

After the video was published, Tom Evans Audio issued a copyright strike against the video which resulted in the video being taken down. Mend It Mark was not informed on what the copyright infringement was.^[2] This decision was met with criticism from creators on YouTube since it questions whether or not showing a circuit design in a video could be considered copyright infringement.^[3][4][5] In December 2024, Louis Rossmann re-uploaded Mend It Mark's original video to his channel with his own introduction.^[6] As of May 2025, the video is still up on Louis' channel. The original video on the Mend It Mark channel is now back up.^[7]