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Which one to buy: UpTone USB REGEN or Intona USB Isolator?

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Middy

Middy

Posted
Posted
I just saw a new gavanic isolator from JCAT,which is in Aluminium box then i thought yeah!... it should be in an aluminium box not a plastic box because while we try to get rid of noises, we open the door for another noise to come in.

so.. i tried to wrap it with 8ply of sheet and apllied some duct tape in sensitive area such as connector or pcb to avoid short curcuit.

After finished it, i had to yell out loud... Holy...sh...., it sounds unbelieveable!

PS. from my experiment, i found 10-12ply can shield broadband EMI. I wraped my phone and then called in from another phone. At 10ply, Phone was loss their connection.

 

[ATTACH=CONFIG]28257[/ATTACH]

 

[ATTACH=CONFIG]28258[/ATTACH]

I did think of wrapping the outside but was worried that if it didn't have a ground it wouldn't work....

 

I ll try wrapping the outside tomorrow to see if I can get an effect... Wrap it like a turkey rough 3 times...

So this is a faraday cage?

 

In your opinion what changes made it worth the effort?

 

BTW be careful and use ESD straps.. Just incase with fine FPGA inside being damaged..

 

Cheers and good luck

 

Dave?

 

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Middy

Middy

Posted
Posted

I have both its not that expensive and it's adhesive..... Slug tape on Ebay.

 

A quick go with kitchen foil before I hit the screw drivers... He picture showed the intona on the Mytek Brooklyn...

Just where it's sat is the power supply. underneath...

 

I'll give it a go tomorrow after work.

there can't be any gaps so I may use a.little soft electrical tape and foil over the usb cable ends with out touching them.

Then if I hear something, copper and Aluminium foil inside...

 

All fun I suppose...

 

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Middy

Middy

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Posted

I am probably completely wrong about the earth drain wire as I was thinking of the principal of power leads were the shield braiding is connected to the power plug side only.

I saw a crazy picture on here somewhere that Japanese audiophiles had wrapped every cable and box with copper on the outside...

I work in Aerospace electronics but I am in manufacturing. A plug wiring is my limit....

Can't wait to break out the Aluminum foil kitchen roll and seal the intona for musical freshness...☺

 

Not recommended without an electrican but I looked at my main consumer unit last night there were loose wires and earth cable. We have RCD trips so I clean the wires with the power off for my Ring I have my Chain on. Scotch bright the connections a little Caig deoxit. Wow very nice just reseating and a little clean.

An electrician would help for an hours work so you are safe... he may think you are mad.. But I got a kicking when the wife came home and my sparkie friends this morning... I could have died.... The incoming is still live...?

 

I am not dead and it sounds better... but get professional help..

 

Will post tonight if the foil works

 

Good luck and thanks again for the Tip

 

Dave

 

 

 

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Middy

Middy

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it looks like the same PCB with intona on it just a Aluminium extruded shell.

 

Our tin foil mod isn't so silly as a cheap experiment.. I just wrapped up my intona and the last usb cable leg to my Mytek Brooklyn.. ..

 

I just asked the angry MOB on SBAF to try the foil as many have the Schitt Yaggy ladder Dac recommended with the intona ...may pick up small changes depending on local RFI EMI.

 

A bit of fun for a cheap experiment 3 wraps of foil around onto cables ...

 

The more try we can prove or discount in a more through way...

 

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Middy

Middy

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Posted

yer it's the paper cut from hell....

That is one thing I wasn't sure of.. The 2 usb connectors leaving them untouched or touching them with the tape. making a connection between the 2 On the outside shells.... Galvanic isolation is purely on the 5V??? I don't know?

 

I was originally thinking of a simple shield on a plastic shell....

 

All fun and makes a change from the norm in audiophile madness..[emoji2]

 

 

 

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Middy

Middy

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Thank you for beating me to the punch Hailey.. Like power issues RFI EMI is a local issue for your kit. In most cases unless you can do meets or have a local Brick's and mortar. You have to through big money of people opinions... This is something we have and a silly proposed idea answered on the cheap...

Keep smiling

and let us know any more thoughts

 

Dave?

 

 

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Middy

Middy

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Posted

https://en.m.wikipedia.org/wiki/Mu-metal

 

This is the pro alloy mix for EMI RFI

 

and explanation

 

This is were I looked last year for products...

 

From Holland...

 

http://hollandshielding.com/125-Mu%20copper%20foil

 

MU and EMI is basically shaping the field. RFI is shielded by the Faraday effect over a certain frequency. you can have gaps but the holes depend on the wavelength. ..I think..

Static likes to sit outside but it's the potential difference that causes damage flowing from hi to low.

On FPGA'S IC'S a low static charge is like hitting your house with lightening due to the nano meter gaps on the chips.. ESD damage is a big problem in micro electronics.. So IC and circuit designers can only mitigate issues....

 

That's my basic knowledge and a reminder from wiki....

 

 

 

 

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Middy

Middy

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I looked at it a good while ago and copper taped inside a FIIO E18 as it was stacked on my old samsung S4.

 

I also tryed the plastic case of the phone.... A little effect I thought but the case is extruded Aluminium...

MU metal is the daddy for EMI.. Mixing making and annealing must cost and it's quiet specialist....

 

 

The original tin foil was to get people trying and see if any one had a positive effect with simple shielding... No cost and a bit of fun for a change.. not the normal love or pissing contest people seem to enjoy....I like blue I hate blue arguments that advances the community by zero....

 

 

Even this may have limited effect...

I am suprised there isn't an audiophile somewhere with a room acting as a faraday shield....and a little conspiracy nutty....But I have read stranger things in this pursuit of sound.....

 

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Middy

Middy

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I did pick one of the unit designer's brains as we do EMC testing... Electromagnetic Compatibility tests.

 

I asked about a drain wire and they said it would be better for EMI. It's a moving Magnetic field that can induce a current like a power generator..

Thinking a simple sleeved wire could be soldered on the copper and wrapped on a Case screw. The Mytek has a phono earth screw so that would work.... or just loosen a case screw.

 

Sorry very basic... Again, anyone more knowledgeable pipe up and learn us more properly...

 

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Middy

Middy

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Anything can block radiation depending on what it's blocking and strength.

There's a mega high powered X ray machine that can do fossils in Europe..

 

I think galvanic isolation is between transformers inducing a current across a boundary The FPGA'S reclocker the signal via the programmed CHIP..

 

http://www.apc.com/us/en/faqs/FA157465/

 

If our friend says he hears a difference then I am game to try the shielding and a ground wire from the copper to an earth point like a case screw as suggested in work for Potential EMC.

It's just fun to try...and cheap..

 

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Middy

Middy

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It's like making your own sunglasses... Depends how bright it is

.... How much RFI EMC by your kit and if it causes an issue.. Noisy 5V line from PC'S is why people want galvanic isolation. The cleaner the signal and reduced jitter mean the DAC can work more efficient...

Any noise being picked up by the intona would transmit.... That's my basic understanding..... Contrary to belief even a Zero real change is ok if you think it's better... Just not when it's expensive snake oil....This is just a cheap experiment....

It gives me something to do that isn't gardening or painting. ...

 

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Middy

Middy

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Posted
I simply put the entire Intona in a big metal box. I A/B it by opening and closing the lid. The sonic effect is remarkable. I believe shielded (closed cover) sounds significantly better. I've ordered a diecast aluminium casing (€20) for the Intona.. :)

 

[ATTACH=CONFIG]28653[/ATTACH]

 

By the way, I don't think you need/should connect the metal shielding to ground. Certainly not to signal ground and mains ground is probably much noisier than any EM induced potential.

Have you got a link so we can see the case you ordered please Abtr..?

 

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Middy

Middy

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Posted

Nice.. a little bit of work and that would spray up nice. You can either drill out a hole ..working your way up in size for the USB PORT. Or mark out the square cut out ...drill inside the lines and needle file out the rest.. May be a grommet...

A small piece of wood and spacers glued in to screw the PCB into place?

You could drill a small hole and a plug of clear plastic so the green light shows....

 

A few options from simple to fancy...

 

Thanks Abtr

Nice 1

 

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