Yes, Darren. The SQ is a step up from the Node 2 - which is a very good streamer in it's own right.
I know this is the dubious WhatHiFi but the writer explains it well:
Between these two multi-room generations, the company had created the NAD Masters M50.2 BluOS network streamer, and the Node 2i’s upgrades begin with trickle-down high-end circuit design and architecture. The layout has been optimised to accommodate its new chassis, and further isolation put in between audio and wi-fi frequencies.
The new, smaller wi-fi chipset has granted Bluesound the freedom to play with the circuit layout – though the company has admitted to being surprised by how much this has affected the Node 2i’s audio performance.
Bluesound has also added some bonus features to its streamer, including that dual-band wi-fi and two-way Bluetooth, as well as a faster processor for an all-round more intuitive user experience.
The 32-bit/192kHz DAC remains, as does its long list of connections, including RCA, coaxial, optical and subwoofer outputs, with physical inputs for optical, analogue and USB-A alongside wi-fi, Bluetooth aptX 4.1 and AirPlay 2.
Wiring it into our reference system, it is clear that this is a different animal altogether to its predecessor. While its richness across the frequencies is retained, the soundstage appears more open, with even more granular detail fed in.
What’s most striking is the improvement in this streamer’s organisation, timing and dynamic expression. There is greater life to the performance as well; the Node 2i shows not only an increased level of expression but also enthusiasm.
Its considerable bass weight, while always supporting an equally full-bodied midrange, is commissioned now to add kick and drive forward proceedings.