Insurance

 Many insurance companies have a cap on "electronics" like they do with jewelry, guns, ect. It should be in writing. If there is a cap you can probably get a rider. I ended up with State Farm as they didn’t have a cap on electronics. Riders are expensive.

I've contacted my agent and have been told that my gear is covered under the contents coverage, up to that limit,  of my HO policy. I asked that the agent double check that and was told it was confirmed.

I have asked my Allstate agent numerous times over the years if I need separate coverage and have been told time and time again that I did not, same as @kerrybh .

There may not be a total limit on electronics, up to your personal household items limit, but it is most likely limited at around $200-500 per item.

Maybe this?

MusicPro Insurance -- Affordable Insurance for the Music Professional