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We guarantee that all of our stock is 100% genuine,
New Zealand sourced stock, with full local warranty.


  • World leader in earphone response accuracy
  • High noise isolation
  • Custom-tuned, reference standard balanced armature ACCU-DriversTM
  • Preferred by audiophiles, musicians and audio engineers
  • Kevlar-reinforced cable for extended durability

Frequency Response

20 Hz - 16 kHz

Accuracy Score

4B (92%) 4S (92%) 4P (86%) 4PT (86%)


Balanced armature

Noise Isolation

35-42 dB

Impedance (@1kHz)

4B (100 Ohms) 4S (100 Ohms) 4PT (27 Ohms)

Sensitivity (@1 kHz) SPL at 0.1v

4B (90 dB) 4S (90 dB) 4PT (102 dB)

Maximum Output (SPL)

122 dB

Cable 5 ft
User Replaceable ACCU-Filters Yes
  • ER4PT Micro Pro In-Ear Earphones
  • 5ft cord with 3.5 mm stereoplug
  • 6.35mm stereophone adapter plug
  • Assortment of ACCU•Fit™ eartips
  • Filter changing tool and replacement ACCU•Filter™ wax filters
  • Shirt clip
  • Airline adapter
  • Travelpouch
  • Storagebox
  • Channel matching compliance graph

Customer Reviews

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