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Uptone EtherREGEN
- Thread starter jtwrace
- Start date
Killingbeans
Major Contributor
Now you're just throwing wood on the 'ASR is a cult' bonfire 
Looking at this photo, a few things stand out:
1a. No attempt appears to have been made regarding trace length matching either within each differential pair or between the 4 pairs of each port. For a company constantly banging on about signal integrity, such sloppiness has no excuse, even if it works in practice.
1b. The diff pairs appear to have been routed as separate traces resulting in variable spacing. Again, no excuse not to get this right.
2a. The voltage regulators are all bunched together, far from the loads they are supplying. This distance likely defeats the low noise these devices are capable of (as if it mattered here).
2b. The PCB layout around the LT3045 regulators looks nothing like that recommended by ADI.
Which one of those components is the one that makes "vocals seem less congested" and give "greater image solidity and less congestion translate to a sense of overall clarity and less harshness"
We need some severe looking outfits , I'm thinking knee high leather boots , well fitted trousers and shirts .. black, grey , red and white colour palette.Now you're just throwing wood on the 'ASR is a cult' bonfire
Some kind of bird as a insignia maybe perched on a soldering iron, oh leather caps can't have too much leather .
We want to be taken seriously, this will help.
decoRyder
Member
- Joined
- Apr 10, 2019
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- 161
From the product page:
Wow - total snakeoil - I wonder if the proprietors of 'Uptone Audio' have ever heard of Manchester Encoding, used by any old switch in existence.
Wow - total snakeoil - I wonder if the proprietors of 'Uptone Audio' have ever heard of Manchester Encoding, used by any old switch in existence.
digicidal
Major Contributor
That's because ADI stupidly wasn't aware of how damaging to the texture and soul of the data their reference designs were. Hopefully they are now in touch and working with Uptone on the next revisions which I'm sure will sound much more sublime.
Manchester encoding is used for 10 Mbps Ethernet. 100 Mbps uses NRZI coding similar to USB, and GbE uses PAM5. That's all on the twisted pair cabling. Inside a device, behind the PHY, other formats are used, usually GMII, RGMII, or SGMII. Presumably it is one of these formats that crosses their isolation barrier. Not that this makes any sense of their techobabble.
KSTR
Major Contributor
The layout person probably is the only down-to-earth guy in this company and decided to just get the job done rather than freaking out. He was handed a schematic, given a fixed PCB real estate and connector layout (as the casing tools already have been ordered after some eye-balling) and for sure he had a strict time-line with the boss looking over his shoulders from time to time, making subtle noises of restlessness... at least that's what I could easily imagine, been there, done that.
No excuse for what we see of course, just a bit of sympathy for the infantry.
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Killingbeans
Major Contributor
As a big fan of 80's Metal I couldn't agree more, but we need to ditch the totalitarian colors and replace them with studs, chains and maybe a bullet belt.
I vote for London Leatherboys by Accept as our theme song!
As a bonus, the sexual ambiguity will work together with the PC culture to make us practically immune to any critique
OP
- Thread Starter
- #474
I would encourage anyone that's interested in this device to look at the objective measurements; that tells the whole story.
Theriverlethe
Senior Member
- Joined
- Oct 20, 2019
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What objective measurements?
digicidal
Major Contributor
About the only objective measurements that could have any bearing on this device would be throughput (which I would hope is the same as a generic $20 desktop switch) and the physical dimensions of the case.
Not possible to have objective measurements of sound - as data doesn't have any - so it should sound as good (or bad) as whatever streaming DAC or PC is on the other end of the network connection.
Not possible to have objective measurements of sound - as data doesn't have any - so it should sound as good (or bad) as whatever streaming DAC or PC is on the other end of the network connection.
Eh ?? That's the whole point. There are none. Testing to see if an Ethernet switch can enhance the quality of the audio encoded into a digital stream being transported by TCP/IP over an Ethernet connection is like testing to see if a ball will rise or fall when I let go of it.
Wait until John Swenson designs his new measurement technology. It will clearly demonstrate that the ball is rising while you all think it’s falling.
The same way you their new measurement device isn't getting closer to release, it's really getting further from release.
No you wouldn't. I keep seeing this argument but I don't understand it. The buffered signal has already passed through the switch, so any potential problem or benefit is already in the buffered signal. Pulling out the ethernet cable is irrelevant.
The post following the original with the spoof justification highlights this. Pulling out the cable can't affect the signal that is already in the buffer.
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