iFi audio iPower - universal Ultra-Low Noise AC/DC adapter
Jan 23, 2018 at 11:29 AM Post #241 of 328
I tried to use the 12v IPower with my Arcam rHead headphone amplifier- it works, however there is a very disturbing electrical buzzing noise in the background (via my headphones) that isn't there with other power supply. The buzzing is heard via my headphones even when my amplifier is turned off completely (with the iPower still plugged in it).. when i turn on the amp and keep it at low volume the buzzing goes quiet, but then comes back when I amplify the music (it is amplified with the volume), unfortunately it is affecting my music listening.

I'm sad that it isn't working properly as otherwise it improves the sound quality.
 
Jan 24, 2018 at 5:01 PM Post #242 of 328
I tried to use the 12v IPower with my Arcam rHead headphone amplifier- it works, however there is a very disturbing electrical buzzing noise in the background (via my headphones) that isn't there with other power supply. The buzzing is heard via my headphones even when my amplifier is turned off completely (with the iPower still plugged in it).. when i turn on the amp and keep it at low volume the buzzing goes quiet, but then comes back when I amplify the music (it is amplified with the volume), unfortunately it is affecting my music listening.

I'm sad that it isn't working properly as otherwise it improves the sound quality.

This looks like a case that qulifies for our Support Ticket Platform: http://support.ifi-audio.com

This is the fastest and most reliable way to help you out.
 
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May 14, 2018 at 9:03 PM Post #244 of 328
I tried to use the 12v IPower with my Arcam rHead headphone amplifier- it works, however there is a very disturbing electrical buzzing noise in the background (via my headphones) that isn't there with other power supply. The buzzing is heard via my headphones even when my amplifier is turned off completely (with the iPower still plugged in it).. when i turn on the amp and keep it at low volume the buzzing goes quiet, but then comes back when I amplify the music (it is amplified with the volume), unfortunately it is affecting my music listening.

I'm sad that it isn't working properly as otherwise it improves the sound quality.
did you ever get this resolved? Does the iPower work with your rHead? I'm thinking of going this route. Thanks
 
Jun 30, 2018 at 11:01 PM Post #245 of 328
I just wonder can I plug several ifi ipower 5v into a balanced isolation transformer (something like KECES BP1200)? Will there be any improvement by doing that ( I don't have dedicate power line for my headphone setup)? Thanks
 
Jul 3, 2018 at 11:52 AM Post #246 of 328
I just wonder can I plug several ifi ipower 5v into a balanced isolation transformer (something like KECES BP1200)? Will there be any improvement by doing that ( I don't have dedicate power line for my headphone setup)? Thanks

Our AP2 measurement system uses balanced isolation transformers to allow us to measure noise without problems from unwanted earth loops and/or missing earth.

So using a balanced isolation transformer will be fine in terms of safety, though wattage (power level) must be considered. If it will provide improvements or not depends on the system and is not easy to predict.
 
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Jul 15, 2018 at 10:02 PM Post #248 of 328
It’s rated for up to 2.5A current. While I don’t know of any products that use USB wall wats and draw more than 2.5A, you should verify the current draw of your device, and only use it to power devices that list their current draw < 2.5A.
 
Jul 28, 2018 at 2:59 AM Post #249 of 328
hey should i get the ipower 9v or 5v or 12v

using legend x, micro dsd black label, and ifi galvanic 3.0
 
Aug 5, 2018 at 5:29 AM Post #252 of 328
1C770295-1338-434B-A07C-131489C199EA.jpeg

I just bought a 9v to power my vintage discman! The sound improves so significantly that I wanna buy a few more!

However, my two other vintage discman are 6v! What can I do?
 
Aug 17, 2018 at 6:45 AM Post #255 of 328
I also hear electrical buzzing noise with iUSB 3.0 + another iPower through my IEMs. Only when I plugin my power supply to my laptop (which is grounded) does the electrical self noise stop. iUSB ground loop break also doesn't help, only thing that helps is to have a grounded plug somewhere in the chain for one of my devices. Seems like iPower could use a third pin for grounding
 

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