EMI & RFI

EMI is a type of interference caused by errant and unwanted electromagnetic waves that are received and amplified by an audio system.

Radio-frequency interference (RFI) is very similar to EMI but is found in the radio frequency spectrum. They are both sources of irritating, unwanted noise often talked about as ‘audio gremlins’.

Top tip: just don’t add water.

 

This is not artificial but real knowledge. By understanding fully how LPs are cut and replayed,  it is possible to filter record warp strongly without at the same time attenuating low bass or adding group delay.

iEMatch4.4
iEMatch4.4
iEMatch4.4 from iFi audio
Want to optimise your balanced listening to the full?

The all new iEMatch4.4 – better sound, reduced hiss, clearer vocals.

The new iEMatch4.4

Optimise your balanced listening with the iEMatch4.4.

It works with all 4.4mm balanced devices. The iEMatch4.4 has both ultra (-24db) and high gain (-12db) sensitivity adjustment to help you get the most out of even your most sensitive headphones and IEMs.

Benefit from better sound, increased dynamic range, reduced background hiss and clearer vocals

Once tried, your listening won’t be the same.

iEMatch4.4 from iFi audio

Simple. Instant. Improved.

As with our previous iEMatch devices, just add between your headphones/IEMs and the output of your smartphone, DAP (digital audio player) or music source to simply and instantly improve playback.  

  • Regains 24/16 Bit audio resolution
  • 12/24dB noise reduction
  • 0% frequency loss

Change the desired volume level ‘on-the-go’ to ensure a safe, comfortable listening whilst enjoying lower background noise and maximum dynamics.

Sensitive solution

The iEMatch4.4 gives you two sensitivity settings:

  • High – for high sensitivity headphones (reduces gain by 12dB)
  • Ultra – for ultra sensitivity headphones (reduces gain by 24dB)

We suggest trying both to see which listening level works best with your headphones and your listening preferences.

Read our Tech Note on impedance comparisons here.

iEMatch4.4 from iFi audio

Clever custom cable

The minZ™ cable construction is a custom helix design. It is minimised in both capacitance and inductance.

This helix design also provides intrinsic shielding and protects the cable from RFI and EMI noise to ensure the cleanest possible transfer medium.

Do you know that you normally lose at least 2Bits of resolution when listening to your favourite tracks at normal listening levels?

This is because you can’t listen at full volume. Well, you can but you run the risk of damaging your hearing.

Using the iEMatch enables you to turn up the digital volume and get those 2Bits back safely.

Read our tech note to discover more.

Support

ConstructionUltra (-24dB) & High-Gain (-12db) sensitivity adjustment
Custom minZ™ helix construction design, intrinsic shielding provided by minZ™ helix
6N silver/copper matrix wiring with FINAL6063-T5 aluminium-magnesium alloy shell
Gold-plated printed circuit board with audiophile components (eg MELF resistors)
Gold-plated 4.4mm male/female connectors
Input Impedance< 40 Ohms (High-Sensitivity)
< 50 Ohms (Ultra-Sensitivity)
Output Impedance< 8.4 Ohms (High-Sensitivity)
< 3.6 Ohms (Ultra-Sensitivity)
Weight17.5g (0.62oz)
Length116mm (4.6")
Warranty12 months

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