Accessory – iEMatch

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Recover the dynamic range

Maximise sound quality

Ultimate signal transfer

Aircraft-grade alloy

The iEMatch® solves the bane of headphone listening by removing hiss and improving dynamics. As most IEMs and headphones are too loud at even half the volume level, listening enjoyment is always curtailed. No more with the iEMatch® in the signal path.

Use the iEMatch® when the headphones/in-ear monitor (IEM) is either too loud and/or there is excessive hiss from the music source. From Smartphones to airplane in-flight entertainment systems, powerful headphone amplifiers, the iEMatch® improves musical enjoyment by:

1. Background noise – significantly reduced
2. Dynamic range – more open, transparent
3. Volume control – increased usable range

The solution? Add the iEMatch® in-between the headphone and the amplifier. Set to high or ultra-sensitivity, sit back and enjoy the music.

  High or Ultra Sensitivity
iemlogo-11 When listening to music, ‘better dynamics’ is preferable. Or more precisely, a wider ‘Dynamic Range*’ to allow the full openness of a recording; from the upper treble of a cymbal to the deepest bass rumble of a kettle drum to shine through.

*Defined as the difference between the maximum usable sound level and background noise level. Usually, a higher ‘dynamic range is better’ as there is more music to enjoy and less noise to annoy.

Having very sensitive (very loud) headphones means both the self-noise of the source AND the sound level is boosted. This is far from desirable. And to add insult to injury, the sound volume must be reduced to get comfortable listening levels. What is left is more noise and less dynamic range!

Technical example:
If a source has (say) 114dB dynamic range and the Headphone is 30dB too loud, once the volume has been turned down 30dB the dynamic range is reduced to 84dB, or below CD quality, from what is an excellent result for a high-solution source.

With Headphones, especially those that significantly reduce background noise (IEM, noise-reducing etc) excessive levels of electronic background noise quickly become annoying, so noise should always be kept as low as possible.

It literally defeats the object of building a system around an expensive high-resolution headphone amplifier when the volume must be backed off so much that the resulting background noise is so high, quality is reduced to below CD or MP3 audio quality.

By using iEMatch® one can reclaim 12 or 24dB lost dynamic range; as needed to get the most enjoyment from the source; from modern high-resolution recordings down to MP3, the difference is there to be heard.

  Balanced or Single-Ended for 3.5mm
trrs-balx AMR/iFi would like to use the iEMatch® to introduce its proposed new industry standard for single-ended or balanced operation. The 3.5 TRRS-Balanced headphone jack.

There is only ONE option that makes sense, in a commonsensical context. The 3.5mm TRRS Jack is widely adopted in Smartphones and connectors, both plugs and sockets are easily available. Having 4 connections (like the 4-pin XLR), it is ideal for balanced headphones.

Headphones may be fitted with TRRS Jack and a switch to alternate between unbalanced mode (even with microphone) for direct connection to a Smartphone and to balanced mode for use with suitably-equipped DAP/DAC/Headphone Amplifiers.

  The ‘TRRS-Balanced®’ system by iFi provides a way to select the TRRS plug to offer either a balanced connection or a single-ended one.

The iEMatch® uses 3.5mm TRRS connections on both ends and is fully-balanced, so it takes full advantage of the balanced wiring in suitably-equipped headphones.

If the attached headphone is single-ended without microphone, iEMatch® is automatically converted to unbalanced operation. For any unbalanced source with a microphone connection or any unbalanced headphone with a microphone, simply switch the TRRS-Balanced® selector to ‘SE’ and convert iEMatch® to unbalanced operation.

  Precision, top-notch components
iemlogo-22 The iEMatch® is packed using premium components from 6063-TS aluminium –magnesium alloy through to the signal transfer cable which is a 6N silver copper matrix.

The whole is even better than the sum of the parts – it just makes for the most transparent, enjoyment of music.

  Ready for travelling all over the world
air-1 Included in the iEMatch® packgaging are; a velvet pouch, gold-plated airplane adapter and memory-foam contoured ear plugs (-37dB) for peace and quiet when travelling.

We try to think of all scenarios.

Ultra (-24dB)& High-Gain(-12dB) sensitivity adjustment
TRRS-Balanced® for Single-Ended and Balanced operation
6N silver/copper matrix wiring with FINAL 6063-T5 aluminium-magnesium alloy shell
Gold-plated printed circuit board with audiophile components (eg MELF resistors)
Gold-plated 3.5mm male/female connectors
Input Impedance: > 16 Ohm
Output Impedance: < 2.5 Ohms (High-Sensitivity) < 1 Ohms (Ultra-Sensitivity)
Compatible Headphone impedance: 16 Ohm to 600 Ohm rated impedance
12.5 Ohm minimum impedance
Weight: 12.2g
Total Length : 116mm

User Manual
Tech Notes

iEMatch – music is then even clearer

I have some sensitive earphones (Campfire Audio Jupiter and Andromeda). I like to listen on tube amplifiers made for full-size headphones. I would get a hiss or an audible tone. I simply plug in this device and that distracting noise is gone. The music is then even clearer – and the earphone/amplifier synergy is now even better. I’m now going to try the iFi Ear Buddy, too, to see if that one works similarly, so I can use it in another room. Worth the price to me – bigger difference to my ears than (say) a cable upgrade.

Thank you David_54 for your review.


Works as described, November 14, 2016
Amazon Customer

Makes your iem much less sensitive which in turn helps to eliminate hissing that sensitive iems generally exhibit with smartphones.


This is the item you want to get rid of …, April 2, 2017

This is the item you want to get rid of any audible hiss as well as alter impedance output if necessary.

Thank you 10bird for your review.

iEMatch – Fixes the hiss on my m9xx dac/amp and on my …,

November 11, 2016

Fixes the hiss on my m9xx dac/amp and on my phone, however it makes audio from the phone a little too low and should require an external amp.

Thank you David for your review.

iEMatch – Put this in your CIEM survival kit!

I was skeptical of this finally solving an issue that I’ve had, which is finding a DAP or DAC/ that wouldn’t hiss using my Ultimate Ears Reference Monitors. Unfortunately, many audiophile DAPs and DAC/amps are designed for full sized headphone power, which doesn’t work well for custom in ear monitors. I have used this little thing on a Herus, my audio interface, and can enjoy a black background with less gain, so I can actually fine tune my volume. Another positive for this device is that it isn’t another impedance adapter, which would affect the frequency response of multi-BA IEMs. iFi did some magic with this, and made the ultra level under 1 ohm impedance!

I would say this is a near required purchase for anyone with sensitive in ear headphones or CIEMs.

Thank you Brian for your review.

“A Small and affordable little accessory called the iEMatch.”

“In my testing, the iEMatch was a huge improvement in everyday use…This is a dead easy recommendation and I am sure it will find a safe place in your IEM case!”

Many thanks HEADFONICS for your excellent review.

iFi Audio iEMatch a review by MikePortnoy

Pros: “Eliminates hiss, no significant change in sound.”

“iEMatch is one of the iFi’s newest units…it removes hiss and provides a more dynamic presentation…It offers a balanced plug that allows using it on sources that have balanced outputs. In addition, there is a switch on the plug for a range of output style from single ended to balanced…iFi offers rich accessories for those who frequently travel via airplane…iEMatch relatively eliminates hiss arising out of the source with a slight change in the sound…iFi iEMatch is a nice travel accessory that can be purchased for $49. It is easy to use and can be considered as a daily unit…it eliminates hiss considerably.”

Thank you Mike Portnoy for your review.

HiSoundFi of Head-Fi reviews the iEMatch!


iEMatch: “Pros: Eliminates the need to own several impedance adapters, Runs inline with sources and earphones, Incredibly smart design, Easy to use”
“What happens as a result is many of these earphones have a background hiss or will pick up digital noise. It can get really annoying, especially when trying to use an earphone of this type (or any other sensitive earphone for that matter) with our favorite portable sources like DAPs, and portable DAC/Amplifiers. If we are going to shell out large amounts of cash on a high end earphone, we don’t want to be burdened by background noise, right?…..While it does come in at a higher price than a few impedance adapters, this is a convenient product that will be a must have for those of us who have several in-ear monitors. I have already mentioned this device in several reviews. It addresses one of the main gripes people have for sensitive earphones.”

Thanks HiSoundFi!

John H. Darko gets the gist of the new accessory releases whilst at RMAF 2016!


iEMatch: “The first is for headphone listeners. The iEMatch is an inline attenuator that reduces headroom and re-introduces the listener to the potential for a wider dynamic range”

iDefender 3.0: “a single purpose device that will stop ground loops in their tracks in the most obvious way possible: pulling the plug on USB power itself. Data will still pass freely.”

iSilencer 3.0: “ an accessory designed to cauterise electrically noisy USB feeds”

Thank you for your write up John H. Darko!

iEMatch main accessories
• iFi bag
• aircraft socket adapter
• Earplug
• user manual
• Warranty Card
• STS Card