Difference between Bluesound Node, Node 2, Node 2i, NodeX

One big difference is that at some point (not exactly sure which model) there was a USB output implemented.

The original Node was the big, ugly, plastic cube. The Node 2 was the introduction of the current form factor, with a new DAC. The 2i introduced AirPlay2 and dual-band wi-fi. I believe it used the same DAC as the Node 2. The next gen Node (N130) had an improved DAC, new controls on the top, and allowed USB output. I believe the N130 also changed the plastic material of the case. There were complaints that earlier Nodes had their soft plastic cover deteriorate. The Node X again improved the DAC, as well as the headphone output.

I'm sure the different DACs all sound different. How much better each generation sounds will depend on the quality of your system. I find the difference in DACs among my Node 2i, Denafrips Ares II, and Meridian Director to be subtle.

Knowing now how much difference a DAC can make, I would not think that beyond the DAC I would be able to hear any difference between the Node models. I might convince myself I could hear differences, but I'd be lying to myself.

we are a  blue sound dealer

The node 2iwas the first really successful streamer from bluesound

The node is the current version  a redesign of the 2i adds USB output 

the node X uses an improved Dac chip over the node.

Dave and Troy

Audio intellect NJ

Bluesound Dealer

The X also implemented the low output impedance THX headphone circuit and replaced the 3.5mm headphone jack with a 6.3mm.  That’s in addition to employing the ESS Sabre DAC, which the other Nodes did not. As a front end only, the N130 should be identical. Best use case is USB out into a USB DAC of your choice, with MQA decoding to leverage Tidal streaming. Another popular sport is replacing the SMPS with a linear supply. 

Add a Pardo LPS and you take it up notch. 

Save yourself the money by a fiio K5 pro headphone amp ($150.00) with the ESS saber chip.. yes you are tethered to a USB cable but the Blue Node would not play music unless it was saved to my Amazon unlimited music.. I think the fiio sounds better too

IMO, a TeddyPardo LPS improves the Bluesound Node significantly in all ways.  Imaging is greatly improved,  soundstage is wider and deeper,  and bass much tighter.  And the 4.0 OS is intuitive, responsive,  and easy to use.  Another huge advantage is that it supports just about every major streaming service,  with the exception of Apple Music.  I have never used the dac in mine, just digital out, since I've always had a stand alone dac, currently a PS Audio Directstream DAC.  

I agree on adding LPS for improved sonics and or the only way to get higher performance out of the Node. I have since added the DMP A6 which outperforms any of the Nodes but you have to use a phone or tablet.. 

I have a 2i that I  bought refurbished 4 yrs ago and upgraded power supply.  That runs to a Topping D90 AKm version.  I am getting great detail, non fatiguing sound.  I will keep this til it fails.

If you are using an external DAC, I would start at the Node 130 (model after the 2i), as it is the first model with USB output....which you may use at some point in the future. Definitely upgrade the power supply to something like a Teddy Pardo or the like, I use an LHY linear power supply upgrade ($279).....power upgrades make a big difference on Bluesound Nodes

A Bluesound representative told me the least expensive upgrade to the Node X was replacing the stock power cord. I hooked up a Transparent Audio Hardwired C7 power cord and was very happy with the changes. I am currently running coax out to my Moon DAC and I am pleased. 

I upgraded the stock power cord on my Node2 to a Nordost Purple Flare which fits without any adapter. (Digital outputs to DAC: ADI Dac-FS for my main system.)