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Heir Audio 4.A S 4-Driver Custom In-Ear Monitor

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Heir Audio 4.A S 4-Driver Custom In-Ear Monitor

  • 4 Precision Tuned Balanced Armature Drivers

  • Three Way Passive Cross Over Design

  • Two Balanced Armature Drivers for Low frequency production

  • One Balanced Armature Driver for Medium Frequency Production

  • One Balanced Armature Driver for High Frequency Production

  • Dual Bore design

  • AVX OxiCap Capacitors

  • Vishay Resistors

  • Hypoallergenic, Hard Acrylic Shells

  • Detachable cable

Universal demo unit available for auditioning at our Tai Seng office!

*Heir Audio strongly advises customers to take Ear Impressions with a qualified Audiologist.

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The 4.A S is primarily designed for accuracy; it delivers a sound signature that should satisfy those that listen to classical, jazz or those that demand accuracy and clarity. Hear every breath, every turn of the page, even the “tic” of a metronome.  “If it’s in the music, it’s in the music.

Standard CIEM features

  • All faceplates will match the shell colour (additional fees apply for different shell and faceplate colours)
  • All faceplates carry the company Logo (Optional)
  • All standard cables are black
  • Non-recessed sockets
  • All colours are transparent

Additional features with every 4.A purchased

  • Exotic Wood Face Faceplate (optional)

NOTE: Logo colour selection and placement location is at the discretion of Heir Audio. The free Heir Audio logo option is not recommended for wood and carbon fibre faceplates, as we believe it detracts from the beauty of the CIEMs.

Click to read more Useful Information and check out the available Colour & Artwork options!

Technical Specifications

Additional Information

Colour Customisable
Warranty 1 year (local)
Product Weight (g) 299
Country of Manufacture China
Availability Available
Product Type Earphone
Style/Type Custom In-Ear (CIEM)
Driver Configuration 4-Drivers (Balanced Armature)
Headphone Design Closed-Back
Microphone None
Cable Style Detachable (2-pin Westone/CIEM)
Input Connectivity 3.5mm stereo
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