[Eruditeswine]

I have the mu-metal shield installed in the Pulse Infinity (Original Chassis). Support ticket regarding firmware update was answered after 17 days. USB Control Panel 2V0 appears to solve the need for multiple reboots for audio playback.

 

[greenkiwi]

They have been responsive to my support tickets... And they are going to check my infinity for the shield while they are fixing my display.

 

[Panelhead]

I hate to bring this up, for clock shielding I would think a Faraday shield would be much more effective than a mu-metal.
Cannot see these Femto crystals emitting significant magnetic fields. The may stream RF.

 

[NigelJ]

I hate to bring this up, for clock shielding I would think a Faraday shield would be much more effective than a mu-metal.
Cannot see these Femto crystals emitting significant magnetic fields. The may stream RF.

I think it might be shielding the clocks from external magnetic fields, also I believe that it is soldered in place and this is probably to a ground plane so that it also acts as a Faraday cage. Obviously the shield in the video hadn't yet been secured.

 

[wingsounds13]

Correct on all points Nigel. When properly installed, the Mu Metal shield is (supposed to be) soldered down which bonds it to the ground plane and creates a Faraday cage. This shield helps to isolate the clocks from EMI/RFI generated within the DAC, as well as shield the DAC from any EMI radiation from the clock circuits.

Now I feel the need to check my Pulse X infinity V.2 for the presence of the shield. If absent, I hesitate to do anything about it, as my infinity sounds wonderful as is and is working quite reliably. Heck... I even hesitate to consider any firmware upgrades for fear of upsetting the balance and joining the ranks of misbehaving Pulse DACs.

J.P.

 

[ghiglie]

Oh oh, shield missing here too!



btw, reassembling the unit was quite a job. Beside I had the wrong screwdriver (and now you can see someone worked on screws! ), the top panel won't fit easily, I had to slide it in and press to get the side screws fit.
Hope this unit will work for long time... can't imagine how long (and expensive) it would get to have it back :blink:

 

[m-i-c-k-e-y]

Ok found this on IGG:
 
=======================================================
 
Adrian Leung1 month ago

To all of those that actually have a pulse, it’d be interesting to know whether you guys have a mu-metal shield as promised. For those that don’t have the thing yet, might wanna consider it as $ spent to buy a lesson and move on.

Larry Ho

Campaigner​

1 month ago

Hi, Adrian We put Mu metal on all 2013 backers DAC and Infinity backers. We know your units missed these mu metal shield due to our production process error in the very beginning, please contact us and we will add it for you.

 

[nudd]

They have been responsive to my support tickets... And they are going to check my infinity for the shield while they are fixing my display.

Hmm wish they would respond to mine

 

[dclaz]

I wish it was possible to get a refund for an as yet undelivered unit.

 

[nudd]

How can they stick a QC passed sticker without checking such an obvious thing on the infinity (pretty much their top offering in the campaign) ... Crazy ...

I do think it sounds good if a little bit cold for the early bird price ... I am going to spring for a schiit multibit one day ...

 

[FayeForever]

I think it might be shielding the clocks from external magnetic fields, also I believe that it is soldered in place and this is probably to a ground plane so that it also acts as a Faraday cage. Obviously the shield in the video hadn't yet been secured.

At least in the vanilla Pulse, the shield is just clipped on the PCB, and I don't remember seeing metal traces that can touch and ground the shield.

 

[adrian0115]

At least in the vanilla Pulse, the shield is just clipped on the PCB, and I don't remember seeing metal traces that can touch and ground the shield.

+1
 
Larry said it himself that the shield just clips onto the PCB.  There's no electrical grounding happening.

 

[adrian0115]

How can they stick a QC passed sticker without checking such an obvious thing on the infinity (pretty much their top offering in the campaign) ... Crazy ...

I do think it sounds good if a little bit cold for the early bird price ... I am going to spring for a schiit multibit one day ...

+1  I was wondering EXACTLY the same thing myself.  How can these things pass QC.  

 

[adrian0115]

Oh oh, shield missing here too!



btw, reassembling the unit was quite a job. Beside I had the wrong screwdriver (and now you can see someone worked on screws!

), the top panel won't fit easily, I had to slide it in and press to get the side screws fit.
Hope this unit will work for long time... can't imagine how long (and expensive) it would get to have it back

Hmm...using a simple Philips screwdriver was all it took for me to take it apart/reassemble.  I believe you can loosen the side screws so that it takes the pressure off the plexiglass top so it comes off easily.  The metal cover is basically held in place by the screws on the back of the unit.  Not a single scratch to the screws themselves when I took it apart. 

 

[adrian0115]

  Ok found this on IGG:
 
=======================================================
 
Adrian Leung1 month ago

To all of those that actually have a pulse, it’d be interesting to know whether you guys have a mu-metal shield as promised. For those that don’t have the thing yet, might wanna consider it as $ spent to buy a lesson and move on.

Larry Ho

Campaigner​

1 month ago

Hi, Adrian We put Mu metal on all 2013 backers DAC and Infinity backers. We know your units missed these mu metal shield due to our production process error in the very beginning, please contact us and we will add it for you.

Mickey,
 
Thanks for re-posting this for me.