Thanks to a firmware update that reaches a large number of Onkyo receivers and their brands, Integra, Pioneer and Pioneer Elite, all will work with the Sonos application. The official list of compatible AV network, stereo receivers and processors will be announced at the beginning of June along with the firmware update and availability.
This power movement is the result of the "Works With Sonos" initiative, which allows third-party manufacturers such as Onkyo not only to mimic a Sonos speaker but also interact by mixing or creating groups, synchronizing with the application Sonos without the need of a concentrator.
For example, you can integrate your previous Onkyo hardware with the Sonos application along with any other Sonos-compatible hardware you have to create a better, higher fidelity sound system in your home.
It's great news if you're interested in the Sonos ecosystem but do not want to spend hundreds on new speakers. This planned firmware update is a precursor to the Sonos June event in San Francisco, where Sonos is likely to mention the update in some way.