iFi audio EarBuddy
Dec 19, 2019 at 3:56 PM Post #136 of 148
How do these adapter work?

Our iEMatch isn't just an impedance adapter. It was designed to increase headroom and reduce hiss, but also not to significantly change output impedance of a product it's connected to.
 
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Apr 3, 2021 at 8:33 AM Post #137 of 148
Hi guys, I have an iem with a 24 ohm impedance and it makes an annoying white noise when connected to my laptop integrated sound card. Also the max volume is 6 % because going higher is too loud . Do you recommend the Earbuddy or the IeMatch to solve my problem with my 24 ohm impedance iem?
 
Apr 3, 2021 at 9:13 AM Post #138 of 148
Hi guys, I have an iem with a 24 ohm impedance and it makes an annoying white noise when connected to my laptop integrated sound card. Also the max volume is 6 % because going higher is too loud . Do you recommend the Earbuddy or the IeMatch to solve my problem with my 24 ohm impedance iem?
Ear Buddy. Since you mentioned you're gonna use it with your laptop.
As for the differences, other than the price and cable/sound quality, Ear Buddy is somewhere between the "High" and "Ultra" settings of iEMatch.
 
Aug 29, 2021 at 11:01 AM Post #144 of 148
I'm still not sure whether I understand correctly what EarBuddy does to the impedance of the amp and how to calculate it. Let's assume that I want to use 23 Ohm amplifier with 44 Ohm headphones. What will be the amplifier impedance after connecting EarBuddy to it? Where the numbers will be derived from? I don't really have a problem with hiss, I just want to stick to 1/8 rule for the impedance.

I was also wondering what does "Input impedance of >16 Ohm" stated in the specifications mean, should the amp impedance be greater than 16 Ohm?

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Aug 29, 2021 at 12:17 PM Post #145 of 148
If you add the EarBuddy on your amp you should get under 3 ohms output impedance. If you want to get lower output impedance you need the IEMatch and enable "Ultra" setting you will get 1 ohms output impedance, because EarBuddy and IEMatch are voltage dividers, for example I have a phone with ~ 33 ohms output impedance and I could lower to it to only 1 ohms output impedenance just using the IEMatch (I messured this too).
 
Aug 29, 2021 at 12:33 PM Post #146 of 148
If you add the EarBuddy on your amp you should get under 3 ohms output impedance. If you want to get lower output impedance you need the IEMatch and enable "Ultra" setting you will get 1 ohms output impedance, because EarBuddy and IEMatch are voltage dividers, for example I have a phone with ~ 33 ohms output impedance and I could lower to it to only 1 ohms output impedenance just using the IEMatch (I messured this too).
Does it mean that the 3 Ohm output impedance isn’t amp impedance dependent? If it is so, why? And if we look the other way, what would be headphone impedance with EarBuddy connected?
 
Aug 30, 2021 at 3:55 AM Post #147 of 148
It is dependent from the amp and it's output impedance you want to connect, so depending on the output impedance it is possible to lower the output impedance with this method since the EarBuddy and IEMatch are voltage dividers. Your headphone impedance will not change at all, it only affects the output impedance of the connected amp nothing else.
 
Aug 30, 2021 at 11:31 AM Post #148 of 148
It is dependent from the amp and it's output impedance you want to connect, so depending on the output impedance it is possible to lower the output impedance with this method since the EarBuddy and IEMatch are voltage dividers. Your headphone impedance will not change at all, it only affects the output impedance of the connected amp nothing else.

That's correct, thanks!
 
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