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iDefender3.0 (Official) - USB Ground Loop Eliminator


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On 11/7/2018 at 6:03 AM, Em2016 said:

Hi @AMR/iFi audio

 

How much current can iDefender3.0 supply, when plugged into a USB3.0 host port and without external PSU?

 

Max current output without an external power supply?

 

 

Drawing power in excess of 5mA will cause the ground isolation of the iDEF to be bypassed, it in effect becomes useless.

 

This is primarily a "fallback" option in case the external supply is lost.

 

If significant power is drawn (> 5mA) please use an external PSU.

Our PowerStation is here: click me!

 

Check out our Tidal MQA Set-up Guides below. 
Android (Renderer) Mobile
Desktop (Decoder) via USB
Desktop (Decoder) via SPDIF

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15 minutes ago, AMR/iFi audio said:

 

Drawing power in excess of 5mA will cause the ground isolation of the iDEF to be bypassed, it in effect becomes useless.

 

This is primarily a "fallback" option in case the external supply is lost.

 

If significant power is drawn (> 5mA) please use an external PSU.

 

Cheers Gents & Ladies !

 

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Hi all,

We're getting great feedback on the iDefender3.0 on Amazon at the moment. Just thought I'd share a few comments here. 

This is brilliant and does exactly what I hoped it would do. 
http://bit.ly/iDefenderLennyHoag

Eliminated 95% of Noise 
http://bit.ly/iDefenderMichael

Fixed noise problem with USB powered audio interface 
http://bit.ly/AZiDefenderSAdams

Discover even more feedback here.
What experiences are you having with the iDefender3.0?

Our PowerStation is here: click me!

 

Check out our Tidal MQA Set-up Guides below. 
Android (Renderer) Mobile
Desktop (Decoder) via USB
Desktop (Decoder) via SPDIF

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  • 1 year later...
On 2/11/2019 at 3:26 PM, AMR/iFi audio said:

What experiences are you having with the iDefender3.0?

 

Dear iFi audio,

 

I bought a second hand iDefender 3.0 to power my Topping D10S DAC externally with an Allo Nirvana SMPS.

The iDefender works, but I have an operating problem with the DAC (I state that my pc when it is off does not deliver 5v on the USB).

In practice, if I start the PC with everything connected (PC-> iDefender-> DAC) the audio is not reproduced correctly, it is distorted to the maximum (almost unrecognizable) and it is also very low volume (I have to raise the volume to almost 90% amplifier to hear the DAC emit a signal).

At this point if I unplug the DAC from the iDefender and plug it back in, everything works normally.
Same thing if I start the PC with the DAC disconnected from the iDefender and connect it later.

This defect does not occur with other types of peripherals (such as USB sticks or mouse).

I assume it's a negotiation issue between the iDefender and the D10S's XMOS chip.

Is it possible that the external power supply (Allo Nirvana) that is activated together with the PC (a few tenths of a second later due to a relay that switches) could interfere with the negotiation?

 

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