On digging in to this I am even more worried. Masimo was founded in Irvine California in 2011, where it is still based.
It specializes in oximetry, both in hospital and especially home monitoring. It also makes add devices for ventilators, including capnea and end tidal volume monitors. They also have a partnership and may be ownership with Newtech Inc. of Shenzhen, China.
Masimo seem to be under the impression that they can integrate home monitoring with home entertainment systems. So though far fetched, they seem to want to make your AVR do you oximetry monitoring and probably monitor your CPAP remotely, This sounds like a great business model to me. What could go wrong!
Sound United is owned by Viper corporation, and Masimo have purchased the whole works for a billion dollars. It seems Masimo have contributed a small amount of cash, but the buyout is largely leveraged by debt. I regard this as extremely ominous.
The bottom line is that Masimo do not make or design major medical devices, despite to glowing boiler plate about being leading manufacturers of medical equipment. They do not seem to be, but very much peripheral players.
Anyone see a train crash in the offing?