[rafabro]

Will iFi Audio iDefender 3.0 work without power supply? My USB converter doesn't require power and is switched off on USB card. Will iFi Audio iDefender 3.0 transmit signal anyway?

 

[iFi audio]

Will iFi Audio iDefender 3.0 work without power supply? My USB converter doesn't require power and is switched off on USB card. Will iFi Audio iDefender 3.0 transmit signal anyway?

If your DAC is self-powered, then yes, iDefender3.0 doesn't need separate power supply. If your DAC runs on 5V, then you need one.

 

[iFi audio]

Hi all,

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

 

[stuck limo]

If your DAC is self-powered, then yes, iDefender3.0 doesn't need separate power supply. If your DAC runs on 5V, then you need one.

What do you mean by "self powered"? Do you mean off a battery? My DAC runs off USB power, so I was required to purchase a separate power source to plug in.

 

[rafabro]

What do you mean by "self powered"?

This mean own power supply without need of power from USB.

 

[stuck limo]

This mean own power supply without need of power from USB.

Yep, got it. My equipment should be coming on Monday so it'll be interesting to see how it operates.

 

[iFi audio]

This mean own power supply without need of power from USB.

Yup, that's what we meant.

 

[Yviena]

@iFi audio according to RME cutting out the 5v/gnd makes the usb cable not pass EMI tests anymore due to shielding, i'm wondering how does the idefender make sure that the shield is still effective in the usb cable.

You not pass EMI tests anymore. It's not only about internal GND, but also shield. Commercial units therefore need to connect everything as suggested by the standard.

Connecting only the data lines has the potential to fry the USB chip port with unexpected static or spike electricity, either when switching units on/off or by disconnecting/connecting.

 

[iFi audio]

@iFi audio according to RME cutting out the 5v/gnd makes the usb cable not pass EMI tests anymore due to shielding, i'm wondering how does the idefender make sure that the shield is still effective in the usb cable.

We'll ask our tech team about this.

 

[slex]

Just checking, does anyone uses idefender on thier android phones?

Like-- Smartphones --OTG--idefender 3(injected with 5V )-dac that need external power?

Hoping to supply enough power to dac without draining power from phones.

 

[iFi audio]

Just checking, does anyone uses idefender on thier android phones?

Like-- Smartphones --OTG--idefender 3(injected with 5V )-dac that need external power?

Hoping to supply enough power to dac without draining power from phones.

It should work, though iDefender should go in before your OTG cable.

 

[slex]

It should work, though iDefender should go in before your OTG cable.

Hmmm, need USB C to USB A Female adapter to fit the idefender first to the phones.

 

[Yviena]

@iFi audio just wondering but how do i know if the idefender is letting 5v through, or not from the PC, does the led light turn off, or something...

 

[iFi audio]

@iFi audio just wondering but how do i know if the idefender is letting 5v through, or not from the PC, does the led light turn off, or something...

Its orange LED is on: https://ifi-audio.com/wp-content/uploads/2018/07/iDefender_manual.pdf

 

[Dobrescu George]

It works pretty well on my end, although I have to admit, my PC was quite noisy to begin with, the PSU is kind of old, and the motherboard was noisy with everything. Happily, it works and I can hear the differences with a ton of equipment.