Insuring your Audio Room?

Ira- to me, the key would be to talk to different brokers who represent those companies since you will be dealing with the broker in the first instance. I doubt if you called Chubb (which is now part of Ace or the other way around) the insurer would be able to do much more than refer you to a broker. It may be worthwhile, as mentioned, to talk to more than one broker, not because the cost of the insurance, per se, will differ, but there is the "personality" aspect, how hard they are willing to work with you to analyze and recommend, and the extent to which they represent more than one of these types of insurance companies to do a little comparison shopping on your behalf. 

I recall that in the past, personal property insurance was more piece meal, but in my case it has become more packaged over time. My coverage includes my home and automobiles under an umbrella package.

I've gone over this with my broker, and they provide standard plan coverage, so in my case $475K for personal property. The only relevant type that falls outside of the standard is jewelry, and they told me that my audio equipment is covered in the $475K amount. This reminded me of bundled packages from cable providers.

Of course, you want to keep documentation and take pictures of your gear. And, I realized posting my system here, may be another good way to add to that documentation.
Kenny

@kennythekey - I don’t disagree with anything you said. However, I think the word umbrella is actually a term of art (I got what you meant). "Umbrella" as I understand it as a consumer in an insurance context, is extra liability insurance over and above the insurance of things.
My suspicion is, cable analogy of "bundled" notwithstanding, it is cheaper to have one company do much of the coverage or at least have a broker figure out where some specialized insurance kicks in, as part of an overall insurance plan, rather than buying separate insurance for different kinds of coverage piecemeal.

I think a good broker can figure out where a cost savings is, rather than just selling you to maximize their fee. I’ve switched brokers a few times, though carried the same insurance, with modifications, over the years.
Part of the cost is also the deductible. If you are willing to eat the first 5 or 10 grand, the cost comes way down.

Nothing to add to the discussion of insuring the system -- other than to emphasize the point others have made that you need to ensure that you have sufficient "contents" coverage to cover the system -- many policies assume contents as a fixed % of the value of the structure and this may not be sufficient to cover a high end system. I've also found it helpful to have a dealer periodically value the system -- or endorse the valuation you are keeping

Insuring LPs and media is more complex as many insurers simply will not touch them beyond very low limits. I've found that Collectibles Insurance (https://collectinsure.com/) provide good rates and good service (at least in setting up an out of state policy, I've never tried to make a claim) so you may want to give them a try

Back in 1978, Allstate wouldn't insure my house because my stereo system was considered way more than the % of the value of the house. 
Now I have extra riders for my stereo and art, pretty cheap, plus I have an umbrella for extra liability. 
Been thru 1 house fire that destroyed everything. Just because you have X amount of money for your items, you have to list every cd, album, fork, pair of underwear, cable, etc to the insurance company to get reimbursed. It takes months to file a claim. I have video of all my rooms contents and stored off site so if anything happens, I have proof.