I’d price out buying a used Node and a LPS, but compare that (and risks involved in tearing into it unless you have a little electronics experience) with just buying the Node 132 for $549 and being done with it. It has a better power supply per Bluesound to the point that you don’t need to futz about trying to add a LPS.
And as others mentioned, if you are going to use an external DAC, look to the new $299 Node Nano. According to some reviewers, it has better inherent sound quality than the Node 130 and Node X did (using the onboard DAC).
I’m not a flat earther, but the more research I have done over the last 5 years into all this mess, is that yeah, people on Youtube always say "buy price commensurate gear" so you aren’t leaving performance on the table. Well, maybe. But when it comes to streamers, if they are doing their job, you likely won’t hear a snail’s toes difference in SQ between them when feeding an external DAC and if you have the external DAC doing the buffering and reclocking of the data stream. One bone of contention some encounter among streamers (and DACs) is that some of them might be applying some "magical fairy dust" in DSP to the data stream. And yeah, your ears *might* prefer that fairy dust sound.
At the end of the day, get the best streamer you can that has an easy to use and reliable software user interface, feed it into your external DAC and enjoy the music.
All those on YouTube continually say that a $4K streamer sounds better than a $300 one when feeding an external DAC, but none of them, not even Hans Beekhuyzen, with his oscilloscope prop in the background, can show any data as to why that is. Guess stuff that cost more just always sounds better. I’ll sell you a Raspberry Pi for $8000 if you are so inclined. Wink, wink.