It doesn't cover unauthorized modifications made to the Max XL, of course, and accidental damage will also void the warranty. (digitaltrends.com)
It doesn't cover unauthorized modifications made to the Quartz, and accidental damage is similarly out - of - bounds. (digitaltrends.com)
If your HomePod was severely damaged in an accident or it's inoperable after unauthorized modifications, or if we never receive it, we'll charge you the replacement value. (support.apple.com)