Two audio players do not make a fair before-and-after test. If the second player restarts from zero or takes half a second to load, the user is no longer comparing two versions of the same moment. They are comparing two memories.
Source: [Dev.to](https://dev.to/yidao_713c5eeea4f16821823/how-to-build-a-fair-ab-audio-preview-for-ai-processing-52ne)