Fearless Audio S4

Fearless Audio S4 - S4

Fearless Audio S4 4BA 2Pin 0.78mm Detachable HiFi Audiophile In-ear Earphone IEMs

Transparent seriesK1- K12 (K9K6K9+B7K11, K12 is ready to ship .)

Custom Faceplate :

Type A: A1-B7 is USD25

Type B: C6 is USD30

Type C: C1-E5 is USD35

Type D: F1-F7 is USD50

Custom Fit : USD60 (Accept physical ear impressions or digital ear impressions files)

Custom orders will be shipped out within 1-2 weeks.


S4 is very gratifying in the performance of popular songs. Whether it is low frequency, vocal, and resolution, it is quite satisfactory. The transparent sound quality makes the user have a good experience of the favorite music.


Feature: 4 drivers 3-way crossover 2 tubes

Driver:5 balanced armature driver(A Sonion compound low frequency, an independent Knowles intermediate frequency, an independent Knowles high frequency)



Passive noise reduction26DB

Frequency range:15HZ-20KHZ

Connector:2pin 0.78mm



Fearless S4

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Free Shipping

This product qualifies for free aimail shipping to worldwide with tracking number.

It will be shipped via Hong Kong Post by defaut , Europe countries can choose to be shipped via Deutsche Post or Netherlands Post, it is also FREE , pls leave us a message if needed .

  • Views: 1034
  • Brand: Fearless Audio
  • Product Code: S4
  • Availability: In Stock
  • $289.00

Available Options

Tags: Fearless Audio S4, 4BA, 4drivers, 2Pin, 0.78mm, Detachable