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Heir Audio 3.Ai S 3-Driver In-Ear Earphone

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Heir Audio 3.Ai S 3-Driver In-Ear Earphone

  • 3 Precision tuned Balanced Armature drivers

  • One Dedicated drivers for Low Frequency

  • One driver for Middle Frequency

  • One driver for High Frequency

  • Dual Bore Design

  • Detachable Standard Cable

  • Premium Package available!



The 3.Ai S, a hand crafted In Ear Monitor (IEM) utilizing the same internal design and components in the 3.A S Custom In Ear Monitor (CIEM).

The 3.Ai S requires the same painstaking hand craftsmanship that all Heir Audio CIEMs require. The 3.Ai S offers all the advantages of an IEM, built with the same exacting standards of all Heir Audio products.

The 3.Ai S with it's single large bass driver delivers a warm "fun" sound signature with great entertaining low sub lows, and nice clean highs.


Optional Premium Package

The Premium Package for the 3.Ai S is called the 3.Ai S+. These are on pre-order only basis, as they are custom made in the factory according to your order and will have longer delivery time than standard IEMs. 

It will include the following:

  • Magnus 1 Cable (default)
  • Engraved Carrying Case
  • The name Heir Audio or a word with less than 5 characters engraved on the shell
  • Choice of three faceplates - Burl Wood(default for Ai S series), Buck Eye Burl Wood or Black Mamba with Heir Audio Logo
Technical Specifications

Additional Information

Colour Brown
Warranty 2 years (local)
Product Weight (g) 299
Country of Manufacture China
Availability Discontinued
Product Type Earphone
Style/Type Universal In-Ear
Driver Configuration 3-Drivers (Balanced Armature)
Headphone Design Closed-Back
Cable Style Detachable (2-pin Westone/CIEM)
Input Connectivity 3.5mm stereo
User Reviews

Customer Reviews 5 item(s)

A very good investment. =D
I was kinda disappointed when i first tried it on right after i got it into my car... the first try was on my iPhone 4S and i played my favourite Kpop songs. For trials on IEMs, i always have songs with strong bass, pure piano and vocals. guess the disappointment was due to the default tips. When i got home, i tried on different tips and IT WORKED WONDERS!! totally jumped with joy because my $$490 paid off and it was definitely a worthy investment! the design is totally gorgeous and if a picky person like me like this, it means something. awesome when i'm told that i'm the first person to collect it. =D the fit is very very comfortable and the isolation is PERFECT. not good with jargon but I hope that this noob review helped! =P
Build Quality
Value For Money
Review by Jayne Yang / (Posted on 15/04/2015)
Awesome buy
My first try and the earphone does not disappoint, the treble and mids are very clear while bass was complimenting.

I was listening to Lady Gaga and I can hear her singing so sharp while the bass is not compromised.

An awesome buy!
Build Quality
Value For Money
Review by James / (Posted on 15/04/2015)
Great iem, unique looks, fantastic sound
This IEM is all about quality bass. From an owner of many iems, including Westone um1, um3x, Shure SE215, SE535, UE TF10 customs, the Heir Audio 3.Ai does not disappoint. It promises to be a fun IEM, with great bass and sweet vocals, while not losing the smooth treble. If you are after complete clarity and separation, this may not be for you. Not saying that it does not have clarity, it does because after all, they have armature drivers but it is not for a critical listener like myself. The 3.Ai will draw you in with its fun signature, and make you forget about everything else!
Build Quality
Value For Money
Review by jh / (Posted on 15/04/2015)
Looks great, sounds even better!
The bass is so controlled, textured but still has impact and definitely not overpowering the smooth treble and the distinct highs. Its not the most analytical IEM out there but it sure is clear. Its opens up some portions of your song you may not have heard before! The build quality is flawless, the wooden faceplate is just visually stunning. The fit works for me very very well too!
Build Quality
Value For Money
Review by Keith / (Posted on 15/04/2015)
Doesn't lose to earphones with dynamic drivers when it comes to Bass
I have come from a line of dynamic-driver earphones (Beyerdynamic DTX101, JVC FXT90SE, Sennheiser IE8, etc) and I simply could not bring myself to buy earphones with Balanced Armatures (BA) as I thought they do not produce bass in a level that is low or tight enough, imho.

However, an intrinsic curiosity made me want to foray into the land of the BA for once, and many reviews online (run a simple search yourself on google) describe the Heir Audio 3.Ai as an in-ear monitor being bassy enough without compromising its clarity. To cut the long story short, I'm elated that I made the choice as the Heir Audio 3.Ai really does not disappoint.
Build Quality
Value For Money
Review by June7th / (Posted on 15/04/2015)