FAQs

Impedance matching circuits

Accessories
General
iEMatch (3.5mm & 2.5mm)
To make it a bit more clear on our end, iEMatch has at the max under 3 Ohm output impedance. The respective changes in amplitude with frequency generally pretty much…
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Increasing digital volume to recover Bits

Accessories
General
iEMatch (3.5mm & 2.5mm)
We see it quite often that where there is a mix-up of actual, objective dynamic range (that is the difference between a digital maximum level signal and silence) and subjective…
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Is cross-talk possible?

Accessories
General
iEMatch (3.5mm & 2.5mm)
Question: I was wondering if this was an intended issue with the IEMatch. I have noticed that I am getting some crosstalk even across different headphones/earphones/IEMs and different devices. Doing…
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The iEMatch is not an impedance adapter?

Accessories
General
iEMatch (3.5mm & 2.5mm)
iEMatch gives you the flexibility of 3.5mm TRS or 3.5mm balanced TRRS and a switch between two impedance settings to fine-tune to your IEMs. While the drive impedance to the…
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What is the iEMatch?

Accessories
General
iEMatch (3.5mm & 2.5mm)
It’s designed to be a linear device, which means it’s purpose is to get the signal from point A to point B with as little alteration as possible, all the…
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Why did iFi select -12dB and -24dB?

Accessories
General
iEMatch (3.5mm & 2.5mm)
Given the wide range of headphones/IEM sensitivities (e.g. from 140dB/V – a 30dB difference), we felt that as much attenuation as 24dB was needed for the most sensitive headphones. Using…
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Why do I hear distortion?

Accessories
General
iEMatch (3.5mm & 2.5mm)
The iEmatch is a purely passive device. It cannot by itself produce distortion. Any distortion observed is from the driving amplifier. Further question: But I tested mine with an IEM…
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