The answer is not quite and yes in that order.
More helpfully, the Statement uses the same oven-controlled crystal oscillator as the PhoenixNet to reclock its USB and Ethernet outputs, was the starting point for the PhoenixNet design and takes you part-way there. But the PhoenixNet has a totally dedicated power supply and uses very different Ethernet ports that are slower/quieter, don’t have LED lights and are silicone mounted. In addition, using the Statement and PhoenixNet together, the two OXCOs work well together. That’s as much of the design side, as explained to me by Innuos, as I can remember.
In practice, adding the PhoenixNet makes an immediately obvious difference even before both units have warmed up and settled down: instrumental textures and separation are enhanced, become more vibrant, detailed and realistic with more palpable decay as well, the soundstage becomes more three dimensional - depth and breadth increasing and even height to an extent, with a greater sense of presence and airiness - microdynamics improve and everything simply sounds more present and involving. The noise floor is reduced still further.
So, although it’s logical to think that the PhoenixNet shouldn’t make a difference, being inspired by the Statement design and both featuring the same OXCO (of which the Statement, moreover, includes a second for its USB out port), it has significant differences and does bring further improvement. Which is why I bought both.
If demoing, it’s important not to connect the PhoenixNet to the usual Ethernet out port (Streamer), but to connect your streamer (e.g. ND555) and Statement both to the PhoenixNet outports with your network connected to the PhoenixNet in port. It makes a significant difference to SQ and not all dealers are aware of this although it is what Innuos recommend.
Because the Statement ports are faster you may want to connect it direct to the network when copying the content of a NAS for example to its internal SSD.
I honestly couldn’t be sure whether you would be better off getting the Statement first (to replace your Mac) and the PhoenixNet second, but suspect that could be the best order to take things in if funds allow. If you can get a home demo of both, that would be the way to try things and be sure. If your local dealer can’t oblige, the local Innuos office may be able to help them out. Their customer support is very good.
Hth - let me know if you feel I’ve left something out and I’ll try to do better.
The PhoenixNet and Statement together have made a wonderful difference to the ND555 in my system and that’s without the Sense app yet being optimised for the Ethernet out (making full use of the RAM play cache). That’s two software releases down the line, though Innuos can install a glitchy not yet even beta workaround.