Free worldwide shipping Free FedEx Priority over USD 250 Handmade in Singapore since 2008

AAW x Custom Art Project 4+2 Hybrid In-Ear Monitor

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AAW x Custom Art Project 4+2 Hybrid In-Ear Monitor is a universal-fit in-ear monitor from AAW (Advanced AcousticWerkes), worn with standard ear tips. It has detachable 0.78 mm 2-pin sockets, so it takes our 2-pin upgrade cables.

 

The Most Sophisticated Hybrid Architecture

AAW and Custom Art teamed up in this unprecedented collaboration to design a never-seen-before hybrid architecture featuring FIBAE technology to bring flat impedance and phasing to an isobaric dynamic driver-based system. Furthermore, 4+2 utilizes advanced Nozzle-less Open Vented Armature (NOVATM) Driver coupled with 3 mid-range balanced armature drivers housed in a digitally designed acoustic chamber. 

FIBAE™ Technology

Flat Impedance Balanced Armature Earphone (FIBAE™) technology is the world's first, revolutionary, In-Ear Monitor design providing flat impedance and phase. By changing Balanced Armature driver character from inductive to resistive Custom Art solved one of the oldest problems in the industry – dependence on output impedance of sound source for correct earphone output. With FIBAE™ technology your earphones will always perform best from any DAP.

Nozzle-less Open Vented Armature (NOVA™) Driver

In this hybrid structure, we choose to use a specially designed armature driver with an open front acoustic vent and embedded it deep into the 4+2's 3d printed nozzle. The proximity to the user eardrum eliminates sound pressure decay and any unwanted resonance in a typical tubed balanced armature design.

Dual 8mm Graphene Isobaric Woofer

The 8mm dual isobaric woofer is equipped with dual diaphragms and high strength neodymium magnets. The isobaric design offers reduction in low range THD and higher sound pressure output in comparison to typical dynamic woofers. By further utilizing acoustic filtering technique, it is to only function in minimal overlapping frequency range as opposed to the balanced armature drivers. It pushes the bass performance to a new level in the 4+2 while not overpowering the rest of the spectrum.

BassFlow™ Control

By regulating the amount of air supplied to the dynamic woofer, the BassFlow Control is able to quantitatively and qualitatively dictate texture and response of the bass frequency. The bass can be adjusted to fit the listener’s preference, from the bass-heavy to mid-forward.

3D Printed Enclosure and Precision Engineering

With wholly digitized design process, 4+2 employs AAW 2nd generation digital enclosure and acoustic chamber design. Driver and nozzle placements are simulated hundreds of iterations to determine the ideal phasing and response. It is then 3D printed to precision to maintain consistency in mass production.

Sound Signature

4+2 is tuned with a vigorous and lively sound signature in mind, it offers a natural but hard-hitting sub-bass, which you will never find in a full balanced armature setup. FIBAE mid-woofer driver delivers smooth and precise mids. The dedicated NOVATM driver offers crystal clear details in the upper mid and high range. The treble extension is well controlled to provide a non-fatiguing listening experience. 4+2 delivers expansive headroom, high fidelity with extreme dynamic range and fast transient responses.
Suitable for band performances, performing artists, worship events, audio engineering and anybody who appreciates exceptional listening experience.

Specification

  • Sensitivity: 105dB SPL@1Khz
  • THD<=0.5% @1mW@1Khz
  • Impedance: 8ohm@1Khz
  • Response: 10Hz~40Khz
  • 3D Printed Enclosure

What's in the box

  • Project 4+2 In-Ear Monitor
  • 48" Tiburon OCC Copper Detachable Cable
  • AAW Carrying Case
  • BassFlow™ Control Modules
  • Cleaning Cloth
  • Assorted Ear Tips
  • Owner's Club Card
  • 1 Year Limited Warranty

Common questions

Which cable fits the Project 4+2?

The Project 4+2 has 0.78 mm 2-pin sockets. Choose Standard 2-pin (0.78 mm) on any of our cables; see the AAW cable guide.

What warranty and returns apply?

The Project 4+2 has a 1-year warranty. Unused universal IEMs in their original packaging can be returned within 14 days of confirmed delivery, with a 30% restocking fee. See shipping and returns.

Do you ship worldwide?

Yes, with FedEx; orders of USD 250 or more ship free. In Singapore you can also pick up from our studio at 76 Playfair Road.

  • 5 stars: 9 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
M
Mo B. (Phoenix, US)
Excellent IEM

I purchased the Project 4+2 and am very pleased with the IEMs. The audio is natural neither warm or cool. The separation is exceptional. It expands into the existing surround sound by allowing sounds to be interpreted as three-dimensional with neither horizontal, nor vertical limitation.
It comes with 3 sound customizable sound filters (normal, Vokal, and bass)
The bass is powerful but not overwhelming nor does interfere with the mids or vocals. It completes the audio making the audio sound full without fatiguing your senses.
This IEM produces accurate sound allowing the audio/music to be heard as the producer intended. If you want an accurate IEM this is the IEM to go with.

Y
Yongwook J. (Seoul, KR)
Comfortable sound, with 3 distinctive Bassflow modes

Very good bass of isobaric woofer, and flat mid-high sound feels so comfortable, made me listening music hours without any fatigue or problems.
FIBAE technology make this receiver more useful, just plug in smartphone with 3.5 jack and can listen beautiful sounds. And with nice dac/amp, it’ll make you flying with notes.
Also, Bassflow module is very useful. It makes reasonable change on sound - especially in sub-bass and bass frequency area... anyway on positive side to me. (I love normal/bass mode)
Good receiver for many users wanna experience and feel of Isobaric woofer and Bassflow module. Very pleased and satisfied of this project :)

p
pcj (Okazaki, JP)
Good Sound

BassFlowControl is very useful. It's good to be able to try different things so that you don't get bored with the sound.

s
sieu n. (Houston, US)
Good iem

Very good sound deep bass I like it IEM

C
CHIH K.Y. (Taoyuan District, TW)
AAW CUSTOM ART PROJECT 4+2

A good product with good work, good tone and high cost.

h
hyeoung g.k. (Uijeongbu-si, KR)
good iem

fantastic!

준
준호 오. (Gunpo, KR)
Very good

부드러운 저역대
안정적인 고음

A
Anonymous (Seo-gu, KR)
Interesting sound

Bassflow module + NOVA Driver + Isobaric woofer make sound more interesting ever. Headroom stage feature is like sphere, and Bass~Mid area sound is attractive enough.

L
Linda C. (Central, HK)
AAW + Custom

The vocal is clear, the bass is strong, and the sense of space is sufficient. I like to use bass mode. thanks.

M
Mo B.

If Later on I would like to get another pair Project 4+2 again, can I get them with my custom ear mold and/ or reshell?

Null Audio

Yes, please quote your previous order number so we can look up the impression files

P
Partheev P.

I purchased a pair of AAW x Custom Art Project 4+2 IEMs, could you let me know which brand and model the foam tips are? I wish to order replacements

Thanks

Null Audio

earphone nozzle is 5.5mm. any 3rd party tips accommodating this size will fit~

Y
YWJ

When is expected delivery time of project 4+2?

Null Audio

re-stocking now, new stock to arrive next week.

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