I have my Node connected to a pair of Elac Debut Connex speakers and after going back and forth between the Node's internal DAC (using the analogue output) and the Elac's internal DAC (Node connected over Toslink), I settled on the Elac's internal DAC. Mind you, the Elacs are a reasonably priced pair of active speakers but it's internal DAC sounds better than the Node's. It sounds more open and has better clarity, especially in the midrange which makes female vocals in particular sound more natural. The Node even has a PD Creative board and SBooster power supply (bought the whole package second hand) but even so its internal DAC can't match the Elac's internal DAC. The sound stage is pushed back and the lack of clarity compared to the Elacs makes it sound like it's veiled.
My conclusion is the Node is a great streamer but the sound quality of the internal DAC is not up to par. What I do like is BluOS, I can control the volume over the optical connection and it can learn the codes of any old remote you have lying in a drawer. I'm using a One4all Zapper+ to turn the speakers on and off and to control the Node (presets, volume and previous/next). I also have my Sony A90J connected to the Node using the headphones out on the TV ands this allows me to control the volume using the TV remote.