I am not so sure. Equity firms usually look for firms with a solid market implantation and widely known brands, with potential for medium term expansion, that can take benefit from an injection of fresh money. And I think that the High End cable business is a niche with low growth capability. All IMHO ...
Unfortunately, when you are run by accountants with tin ears, that is impossible to avoid. How can you justify a better sounding component when a 20 cent part measures the same?