iFi Audio SilentPower iEMatch+ 4.4mm Optimizer/Attenuator

iFi iEMatch+ - 4.4mm Optimizer/Attenuator

The iFi iEMatch4.4 is a precision 4.4mm balanced in-line attenuator and impedance-matching adapter designed to tame hiss, unlock cleaner dynamics, and give ultra-sensitive IEMs and headphones a quieter, more controlled listening experience. By lowering output gain with selectable High (-12dB) or Ultra (-24dB) sensitivity settings, it helps restore usable volume range, improve perceived resolution, and reduce background noise when pairing sensitive earphones with powerful sources like DAPs, portable amps, and balanced outputs. Its custom minZ™ helix cable design is engineered to minimize capacitance and inductance while providing intrinsic shielding to help keep RFI/EMI interference out of your signal path. Finished with premium materials—including 6N silver/copper matrix wiring, a rugged FINAL6063-T5 aluminium-magnesium alloy shell, and gold-plated 4.4mm connectors—the iEMatch4.4 is built for audiophile-grade transparency without sacrificing portability.

What It's Good At:

• Reducing audible hiss and noise floor with sensitive IEMs on balanced 4.4mm outputs
• Restoring smoother volume control and safer listening levels by lowering gain (-12dB / -24dB)
• Improving clarity and perceived dynamic range for more defined vocals and detail
• Preserving tonal balance with 0% frequency loss design intent for transparent playback
• Fighting interference with minZ™ helix geometry and intrinsic shielding against RFI/EMI
• Delivering premium durability and signal integrity with gold-plated connectors and quality components

iFi iEMatch+ 4.4mm Full Specifications:

• Product Name: iFi iEMatch4.4
• Compatibility: Works with all 4.4mm balanced devices (4.4mm balanced male input to 4.4mm balanced female output)
• Sensitivity / Gain Adjustment:
  • High: -12dB (for high-sensitivity headphones/IEMs)
  • Ultra: -24dB (for ultra-sensitive headphones/IEMs)
• Cable / Construction: Custom minZ™ helix construction design; minimized capacitance and inductance; intrinsic shielding provided by minZ™ helix
• Wiring: 6N silver/copper matrix wiring
• Housing/Shell Material: FINAL6063-T5 aluminium-magnesium alloy shell
• PCB & Components: Gold-plated printed circuit board with audiophile components (e.g., MELF resistors)
• Connectors: 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)
• Length: 116mm (4.6")
• Weight: 17.5g (0.62oz)
• Warranty Period: 12 months

iFi iEMatch+ 4.4mm Q&A:

What does the iEMatch4.4 do?

It reduces output gain and helps match impedance so sensitive IEMs and headphones run quieter, with less hiss and better control on powerful balanced sources.

When should I use High (-12dB) vs Ultra (-24dB)?

Use High (-12dB) for most high-sensitivity headphones/IEMs, and switch to Ultra (-24dB) if your earphones are extremely sensitive or hiss is still noticeable.

Will it change the sound signature of my headphones or IEMs?

It’s designed to be transparent and improve listening conditions by lowering noise and restoring usable volume range, helping preserve clarity and dynamics without altering tonal balance.

Is the iEMatch4.4 compatible with any balanced device?

It’s made to work with 4.4mm balanced outputs and 4.4mm balanced headphone/IEM connections.

Does it help with volume being too loud at low settings?

Yes—by reducing gain, it makes volume adjustment smoother and gives you more usable range on the volume control.

Can it help with interference or noise from my source?

The minZ™ helix design provides intrinsic shielding and is engineered to help reduce RFI/EMI-related noise entering the signal path.

What materials are used in the iEMatch4.4?

It uses 6N silver/copper matrix wiring, a FINAL6063-T5 aluminium-magnesium alloy shell, and gold-plated connectors plus a gold-plated PCB with audiophile-grade components.

How long is the warranty?

The iEMatch4.4 includes a 12-month warranty.

iFi iEMatch+ 4.4mm Downloads:

iFi SilentPower iEMatch+ 4.4mm User Manual