I'm trying to wrap my head around this exciting new device. I own a iFi nano iDSD, iPhone, Sennheiser Momentum Over-Ear, Mac, and Audirvana+. Like everyone else, I'm subscribed to Tidal Hifi, which is one of the main ways I listen to music (including the very exciting ECM catalog now available). When I listen to Tidal through my Mac, then A+ is doing all of the decoding and rendering for MQA, so I don't see an inherent advantage for the nano iDSD BL. If I just have my iPhone+iDSD BL, then we currently can't use the MQA as it is not supported by the iPhone Tidal app.
The first question is whether we could reasonably expect that MQA *will* become available on the iPhone Tidal app in the relatively near future. In this case, this new iDSD BL would be one of the few truly portable MQA solutions. I'm not sure if I understand the difference between decoding and rendering in this case.
Otherwise, I guess it comes down to how much better this new nano iDSD is better than the previous generation. The two gain stages should help with more sensitive headphones like the Momentums. The built-in camera kit removes some extraneous cords. But it loses SPIDF and RCA outs.
Are there any other differences that I'm missing?