iFi Audio SilentPower iEMatch+ 3.5mm Optimizer/Attenuator

iFi iEMatch+ - 3.5mm Optimizer/Attenuator

If your ultra-sensitive IEMs or headphones reveal background hiss, static, or “pop” noise from phones, DAPs, and portable amps, the iFi iEMatch+ is a simple in-line fix that restores clean listening at normal volume levels. This compact 3.5mm attenuator / impedance-matching adapter sits between your music source and earphones to lower the noise floor and let you use a safer, more comfortable volume range—without dulling your sound.

Built around iFi’s TRRS-Balanced® design, iEMatch+ supports single-ended or balanced operation from compatible 3.5mm outputs, and it includes two sensitivity settings (High and Ultra) to dial in the right amount of attenuation for your gear. The custom minZ™ helix cable is engineered to minimize capacitance and inductance, with intrinsic shielding to help protect the signal from RFI/EMI. Rugged, premium materials—plus travel extras—make it an easy upgrade for daily carry, commuting, and stage monitoring.

What It's Good At:

• Reducing audible hiss/noise with ultra-sensitive IEMs and efficient headphones
• Adding proper attenuation so you can use more usable volume range and better low-level control
• Supporting 3.5mm TRRS balanced and single-ended setups via a simple switch
• Maintaining clean signal transfer with minZ™ helix low-capacitance/low-inductance construction
• Improving everyday portability with a tough alloy shell and included travel accessories
• Quick plug-and-play solution for smartphones, DAPs, portable DAC/amps, and other sources

iFi audio iEMatch+ Full Specifications:

• Audio signal input: 3.5mm male plug
• Audio signal output: 3.5mm female socket
• TRRS-Balanced® switch: Select Single-Ended (SE) or Balanced (BAL) operation
• Sensitivity settings:
  • High-sensitivity: -12 dB gain reduction
  • Ultra-sensitivity: -24 dB gain reduction
• Input impedance: > 16 Ohm
• Output impedance:
  • < 2.5 Ohms (High-Sensitivity)
  • < 1 Ohms (Ultra-Sensitivity)
• Cable construction: minZ™ custom helix design; minimized capacitance/inductance; intrinsic shielding; RFI/EMI noise protection
• Wiring: 6N silver/copper matrix wiring
• Shell material: FINAL6063-T5 aluminium-magnesium alloy
• PCB: Gold-plated printed circuit board with audiophile components (e.g., MELF resistors)
• Connectors: Gold-plated 3.5mm male/female connectors
• Total length: 116 mm (4.6")
• Weight: 12.8 g (0.45 oz)
• Warranty period: 12 months
• Travel accessories included:
  • Gold plated airplane adapter
  • Soft foam contoured ear plugs (-37 dB)
  • Fabric travel pouch

iFi audio iEMatch+ Q&A:

What does the iFi iEMatch+ actually do?

It’s an in-line attenuator/impedance-matching adapter designed to reduce background hiss and improve usable volume control with very sensitive IEMs and headphones.

Will iEMatch+ work with my phone, DAP, or portable DAC/amp?

Yes—connect it between your headphones/IEMs and the output of your smartphone, digital audio player (DAP), or other music source.

What’s the difference between High and Ultra sensitivity modes?

High reduces gain by -12 dB for high-sensitivity headphones, while Ultra reduces gain by -24 dB for ultra-sensitive IEMs—use whichever gives the best listening range and noise reduction.

Do I need to set the switch to SE when using standard (TRS) headphones?

Not necessarily—single-ended conversion is automatic with a TRS plug, and the switch can be set to BAL or SE with no ill effect.

When should I use BAL vs SE on the TRRS-Balanced® switch?

Use BAL with a TRRS balanced headphone connection; if a channel is missing, switch to SE because your source may only support single-ended output.

Can I use iEMatch+ with a headset that has a microphone?

You can, but set the switch to SE—the microphone will be disabled.

Can iEMatch+ cause distortion if I turn the source volume up too far?

In extreme cases, raising the source volume too high may push the source amp into clipping—lower the volume or switch to a different sensitivity level if that happens.

What’s included in the box for travel?

A gold plated airplane adapter, -37 dB soft foam contoured ear plugs, and a fabric travel pouch are included.

iFi audio iEMatch+ Downloads:

iFi SilentPower iEMatch+ User Manual