I was wondering the same thing a few months ago. I used my laptop through USB controlled by my iPhone, and my iPhone and iPad with an Apple camera connector into my DAC. Every way worked well with few hiccups.
I bought a Bluesound Node 2 refurbished from Safe And Sound. It sounds better. Not night and day better, but better. It�s purpose built. My laptop, iPhone, and/or iPad aren�t tied up.
Everything was run through my DAC instead of analog, hence why everything sounded good. The Node sounds better through the same DAC. From a purely sound quality perspective, it might not have been worth it. From a combined sound quality, ergonomics, and the addition of Bluetooth capability, it is worth it.
Worth it or not is all up to the individual. We all have different priorities and salaries. If you�re contemplating a Bluesound Node, check out Safe and Sound. I�ve bought several things from them without any issues.