Ethernet cable for music streaming

Thanks to all for the very helpful responses. Of course, now I'll have to figure out which remedy to try first, and I'm leaning in the direction of upgraded LPS and wi-fi extender. I see that Small Green Computer offers a 12v power supply at a reasonable price that will almost certainly be better than the Chinese one that came with the Innuos streamer. I'm trying to keep this budget in line with the value of the component(s) in question, so spending kilobucks (I think I just made that word up) on any of this doesn't make sense to me. 

I'll post my results--or lack of results--as thing progress. 

So, before jumping in and buying an LPS for this Pulse Mini, I’d like to rely, once more, on the expertise of those of you who have offered such helpful advice. The specs for the Taiwanese switching power supply that came with the streamer are: DC output 12V, 5.0A. The 12V output is easy to match with the iFi and Small Green Computer LPS’s, but what about the amperage? SGC is a bit elliptical about this on their website, though they do seem to indicate that their 12V LPS would deliver 8A max (if I'm reading it right), which would be plenty for the streamer. iFi, however, rates theirs at 12V, 4A and I’m not sure if this would be a problem. Similarly, does the output voltage have to match exactly, or would a higher voltage output still work? Sorry, I’m not very knowledgeable about this stuff, so I’d be very grateful for your help. Many thanks!

Thanks, jerrybj, for this helpful info. I've ordered the Small Green Computer 12v LPS, and we'll see how that goes when it arrives. Meanwhile, I discovered that my previous network switch was probably a bottleneck in the stream, as it was a bit old and topped out at 100 Mbps. I bought a new Negear one that boasts 1 Gps, and it has (I think) helped a bit. Next, I'm going to replace the old CAT5 cable that runs from the router to the switch with CAT6a. I can actually run that as a dedicated line straight to the streamer, and a separate one to the Netgear switch that connects to the TV and the Roku box which seem to work just fine as it is. All of this accomplished, it SHOULD improve things with the streamer, but I'll post the results when it's all done and we see what we've got.

Update:

Well, this all took a while to accomplish, but I upgraded the power supply to the one from Small Green Computer, and it did make some difference. However, there was still some way to go before all the issues were solved. 3 days ago I changed the old CAT5 that ran from the router to the network switch with a 45 ft. run of Blue Jeans Cable CAT6a now going directly to the streamer. (The Netgear network switch is now consigned specifically to the TV and Roku box via a separate run of Blue Jeans Cable CAT6.) This has resulted in a significant improvement over the streamer’s previous performance, (Innuos PulseMini, just to remind you) though I STILL think there’s room for improvement. Perhaps I’ll look into replacing the fuse in the LPS as suggested by jerrybj.

All that said, I have reached a point where I’m actually enjoying listening to the streamer but I have a nagging suspicion that further improvement may only be accomplished by upgrading to a much more expensive one which, for now, just isn’t in the budget.

Oops--small error in the above post: meant to say Audience AU24SE (not 25 'cause there is no such thing) cables. Can't edit anything older than 30 minutes, apparently. 

OP here--let’s clear a few things up. To begin with, I am very happy with my amplification and speakers. Other digital media (CDs, DVDs, and TV streaming--I use the same system for everything) sound very good indeed.

Here’s my system:

Modwright KWI 200 integrated

Ryan R610 bookshelf speakers/REL S/2 sub

Cambridge Audio CXU (their long discontinued universal disc player)

Sonnet Morpheus DAC

Topping A90 D headphone amp/LSA HP2 Ultra headphones

Furman Elite power conditioner/Core Power Technology Deep Core 1800

Cables by Audience (AU25SE for speakers and RCA interconnect), Morrow, and Cerious Technologies.

Prior to owning the PulseMini I had a Sonnet Hermes streamer which exhibited exactly the same issues, which is why I thought the Innuos streamer might be a step up the ladder.

drewportland: thanks for sharing your experience with this combination. I do have the I2S module for the Morpheus DAC and used it with the Hermes, but now I'm  using the USB module because the PulseMini doesn’t have an ethernet ouptut and in any case, doesn’t support the I2S protocol.

Mahler123: your observation about hearing is indeed pertinent.I flatter myself that even at my advanced age (let’s just say over 65) my hearing is still pretty good, though not without some small reduction of high-frequency acuity.

I’ll consider taking another (expensive) step up the ladder only after I think I’ve exhausted all the available alternatives.