AAW M20 Custom In-Ear Monitor

Name: Null Audio
Address: #01-03, LHK2 Building, 76 Playfair Road, Singapore, 367996, SG
Telephone: +65 8731 5476
Price range: $$

¥2,034.00 CNY

AAW’s M20, a large bass armature and the NOVA open-vented armature, in shells made from your ear impressions, with our Brevity Plus cable. Design the shells and faceplates below; ready 6–8 weeks after we receive your impressions.

Bass armature + NOVA
2-way crossover
Shells from your ear impressions
Live 3D preview
Brevity Plus cable
30-day refit

Configure your M20 Custom

Choose the shells, faceplates, artwork, tips and logo below. The price updates as you go.

6–8 weeksFrom receiving your impressions
30-day refitIf the fit isn’t right
1-year warrantyOn the monitors and the cable · then half price for life
AAW, SingaporeImpressions at our studio

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AAW M20 Custom

M20, made for your ears.

The two-armature design of M20, a bass armature for the woofer and NOVA for the super tweeter, in shells cast from your ear impressions: a deeper seal, more isolation and a fit you can wear through a whole set.

You design the shells and faceplates in the configurator, and it comes with our Brevity Plus cable.

2 Armatures: a large-format bass woofer and NOVA
115 dB Sensitivity
6–8 weeks From receiving your impressions
30 days Free refit if the fit isn’t right

At a glance

The build behind the listen

Custom shells from your ear impressions · Brevity Plus cable

1 ×Large-format bass armature
NOVAOpen-vented armature
2-wayPassive crossover
3D-printedDigitally designed enclosure

Key features

Large-format bass armature woofer
NOVA open-vented armature at the nozzle
2-way passive crossover, dual bore
AAW’s second-generation digital acoustic chamber
Electroless Immersion Gold faceplates

Sensitivity: 115 dB
Impedance: 106 Ω
Total harmonic distortion: < 0.5%
Frequency range: 10 Hz – 40 kHz
Drivers: 2 per side
Socket: Recessed 0.78 mm 2-pin

Drivers

A Woofer and a Super Tweeter, Both Armatures

M20 is built the way a loudspeaker with a super tweeter is built. A large-format, fast bass armature does the work of a woofer and moves a great deal of air; AAW’s NOVA open-vented armature sits above it as the tweeter.

NOVA has an open acoustic vent at its front and is set deep in the 3D-printed nozzle, close to your eardrum, which removes the pressure loss and tube resonance of a conventional tubed armature. A 2-way passive crossover divides the band, and two bores carry the sound out: deep, layered bass, a full-bodied voice and the fine detail of the room around it.

Design

Made Your Way

Choose the shell and faceplate colour for each side, wood, glitter, foil or Atelier faceplates or your own artwork, the nozzle tips, the AAW logo finish and engraving, and watch it come together in the configurator’s live 3D preview.

Choose a recessed or flat 2-pin socket. The photos show finishes from AAW custom IEMs.

In the box

Brevity Plus Cable Included

M20 Custom comes with our Brevity Plus copper cable, 48 inches (1.2 m) long, with 2-pin connectors.

You can also upgrade to a higher-tier Null Audio cable when you order; see the AAW cable guide.

Compare

M20 Custom vs M20 universal

The same two-armature design and Brevity Plus cable; AAW adjusts the specifications and internal parts slightly to suit custom shells. The custom is made from your ear impressions, in shells you design; the universal is in stock, in a 3D-printed shell that fits with ear tips.

See M20 universal

M20 Custom vs M20 universal
Feature	Custom	Universal
Fit	Shells made from your ear impressions or 3D scan	Universal shell with ear tips
Look	Your choice of shells, faceplates, artwork and logo	Electroless Immersion Gold faceplates
Drivers	Large-format bass armature + NOVA	Same
Cable	Null Audio Brevity Plus; upgrades in the configurator	Null Audio Brevity Plus; 3.5 mm, or 2.5 or 4.4 mm on request
Socket	Recessed 0.78 mm 2-pin	0.78 mm 2-pin
Ready in	6–8 weeks from receiving your impressions	In stock, ships from Singapore
Returns	No change-of-mind returns; 30-day free refit	14 days, unused

In the box

Ready to listen

AAW M20 Custom in-ear monitors Made from your ear impressions
Null Audio Brevity Plus cable 1.2 m (48 in), 2-pin
AAW carrying case
Cleaning cloth and brush For the nozzles and shells

Ordering and care

Process

How It Works

Configure your M20 Custom and place the order.
Get ear impressions: at our studio in Singapore, or post physical impressions or email a 3D scan with your order number.
AAW builds your M20 Custom in 6–8 weeks from the day we receive your impressions.
We ship it to you, or you collect it at our studio.

Fit

Ear Impressions

In Singapore, we take ear impressions at our studio for SGD 50, by appointment through WhatsApp +65 8731 5476 or sales@null-audio.com.

Elsewhere, post physical impressions from a local audiologist to Null Audio, #01-03, LHK2 Building, 76 Playfair Road, Singapore 367996, or email a 3D scan (STL) of your impressions or ear canals to support@null-audio.com. How to order custom IEMs explains what a good impression or scan needs.

Care

Caring for Custom IEMs

Clear the nozzles with the brush after use and wipe the shells with the dry cloth. Keep them in the case, away from heat and moisture, and avoid alcohol-based cleaners on the faceplates.

If the fit isn’t right within 30 days of delivery, we refit them for free (overseas return shipping is charged separately).

Specifications

Technical details

Monitor

Type: Custom-fit in-ear monitor, two balanced armatures
Drivers: Large-format bass armature woofer, NOVA open-vented armature
Crossover: 2-way passive
Bores: Dual bore
Sensitivity: 115 dB
Impedance: 106 Ω
THD: < 0.5%
Frequency range: 10 Hz – 40 kHz
Shells: Custom-fit, made from your ear impressions or 3D scan; shells, faceplates, artwork and logo of your choice
Socket: Recessed 0.78 mm 2-pin

Cable

Cable: Null Audio Brevity Plus copper, 1.2 m (48 in)
Upgrade: Higher-tier Null Audio cables, chosen in the configurator

Ear impressions

In Singapore: At our studio, SGD 50, by appointment
Elsewhere: Physical impressions by post, or a 3D scan (one STL file per ear) by email

Service

Lead time: 6–8 weeks from receiving your ear impressions
Refit: Free within 30 days of delivery; overseas return shipping charged separately
Warranty: 1 year, on the monitors and the cable
Returns: Custom IEMs can’t be returned for a change of mind; defects are covered by the warranty

Do these come with everything i need to use them? I'm new to IEMs but I really need a custom molded pair for my ears.

Null Audio

Every custom IEM comes with a Null Audio cable. You also need ear impressions or a 3D ear scan for the custom fit; see our "How to order custom IEMs" page.

Questions

Good to know

How is M20 Custom different from M20 universal?

The fit and the look. The two-armature design and the Brevity Plus cable are the same, though AAW adjusts the specifications and internal parts slightly for custom shells. The custom is made from your ear impressions, so it seals deeper and isolates more, and you design its shells and faceplates. The universal has a 3D-printed shell with gold faceplates, fits with ear tips and is in stock.

How do I order?

Choose your options in the configurator on this page, then get ear impressions made. In Singapore we take impressions at our Playfair Road studio for SGD 50, by appointment. From overseas, post physical impressions or send us 3D scans (STL files) of your ear impressions or ear canals.

How to order custom IEMs

What is the driver configuration?

Two armatures, used like a loudspeaker’s woofer and super tweeter: a large-format bass armature for the low end and AAW’s NOVA open-vented armature in the nozzle for the voice and the treble, joined by a 2-way passive crossover with two bores.

What is NOVA?

AAW’s Nozzle-less Open Vented Armature: an armature with an open acoustic vent at its front, set deep in the nozzle rather than behind a sound tube. Being so close to the eardrum removes the pressure loss and resonance of a conventional tubed armature.

Which cable does it come with?

Our Brevity Plus copper cable, 1.2 m long. You can upgrade to a higher-tier Null Audio cable when you order; AAW customs use recessed 0.78 mm 2-pin sockets, see the AAW cable guide.

How long does it take?

6–8 weeks from the day we receive your ear impressions or scan, plus shipping.

What if the fit isn’t right?

We refit it for free within 30 days of delivery. For overseas orders, return shipping is charged separately.

What warranty and returns apply?

One year against defects in materials and workmanship, on the monitors and the cable. Custom IEMs are made to your ears, so they can’t be returned for a change of mind; quality problems are covered by the warranty.

Read the full return policy

Next in the chain

Follow the signal further.

Routes picked for this page, all from the same bench in Singapore.