The DAC in the Node 2i isn’t awful, but that’s not much of an endorsement. Most decent DACs will be an easily audible upgrade. I ran coax to an Oppo 105 and then stepped up to the Qutest. Definite improvement each step, but I think I’m at the point of diminishing returns while still using the Node as a source. Now I have the Oppo running into the Qutest, too. I don’t find it overly analytical at all, but I also have tubed pre/amp. I’m using the incisive HF roll off filter. The HF roll off is intended to help contain >20k artifacts in high sample rate files. Not that my hearing goes anywhere close to that. There are also warm filters with and without HF roll off, but I like it as is. You might try something more budget friendly like a Schiit Bifrost or some of the other suggestions. I still want to try a few different types of DAC to try to hone in my ear on each one‘s characteristic sound, but I just spent that money on whiskey instead.