At $300, your streamer will not compete with other low jitter solutions.
An Ethernet or "network" DAC with a good master clock in it will easily outperform it. WIFI can be added to any Ethernet DAC BTW. You don't need a "streamer", just a LAN with WIFI or wired router and a computer.
It will of course cost more than $300. My own Overdrive SX with Ethernet input can be used with Jriver or Audirvana on any computer and it will not affect sound quality. Not sure if you can communicate to Jriver with an iPhone.
The Ethernet DAC IMO is the best way to achieve the lowest jitter possible and isolates the playback from any DSP software on the computer, such as the audio stack etc. It contains the only Master Clock and usually just before the D/A logic.
Steve N.
Empirical Audio