Musical equipment. Most current magazines in the field. People from most paper magazines based in the UK as well as some popular internet-based things. It's all about what you can get and sustaining your popularity without actually having any genuine knowledge about what it is that you are talking about.
So you bullshit in your reviews about technical things? You don't know what you're talking about but you're reviewing objective, measurable things from equipment? Not only does that make you an awful person, it makes any magazine who publishes your reviews less reputable, but it's also completely different from reviewing subjective pieces of art.