Shipped from Singapore; delivery options and costs shown at checkout Free FedEx Priority over USD 250 Handmade in Singapore since 2008

AAW M20 Universal In-Ear Monitor, photo 2

AAW M20 Universal In-Ear Monitor, photo 3

AAW M20 Universal In-Ear Monitor, photo 4

AAW M20 Universal In-Ear Monitor

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

¥1,491.00 CNY

AAW M20 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 and comes with our Brevity Plus copper cable, with a 3.5 mm plug; 2.5 mm and 4.4 mm are available on request.

A large-format bass armature and AAW’s NOVA open-vented armature, joined by a 2-way passive crossover, in a 3D-printed shell with Electroless Immersion Gold faceplates. 115 dB sensitivity, 106 Ω impedance.

Bass armature + NOVA
2-way crossover
115 dB · 106 Ω
Brevity Plus cable
3.5 mm; 2.5 · 4.4 mm on request

In stockShips from our Singapore studio
14-day returnsUnused, in original packaging · conditions apply
1-year warrantyOn the monitors and the cable · then half price for life
AAW, SingaporeChat and phone support

AAW M20

Two armatures. One loudspeaker’s logic.

M20 asks what an armature can do when it is given the right job. A large-format bass armature plays the woofer, AAW’s NOVA open-vented armature the super tweeter, in a 3D-printed shell behind gold-patterned faceplates.

The aim was never a longer spec sheet, but a more immersive listen: deep, layered bass, a voice with body and charm, and the fine detail of the room around it.

2 Armatures: a large-format bass woofer and NOVA
115 dB Sensitivity
106 Ω Impedance
2015 The year AAW launched the first M20

At a glance

The build behind the listen

Bass armature and NOVA · gold faceplates · 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
Connector: 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 story

A Name From 2015, Rebuilt

The first M20 was one of AAW’s earliest models, launched in 2015: a two-armature design built on Sonion’s acuPass technology, and a strong one in its day. In 2023 AAW revived the name and rebuilt it with digital acoustic design, 3D printing and the NOVA driver.

It uses AAW’s second-generation digital enclosure and acoustic chamber. Driver and nozzle placement were simulated through hundreds of iterations to settle the phase and the response, then the shell is 3D printed with precision, so every pair matches the design. Its faceplates are made by Electroless Immersion Gold, a process that holds fine detail in a very small space.

In the box

Brevity Plus Cable Included

M20 comes with our Brevity Plus copper cable, 48 inches (1.2 m) long, with 0.78 mm 2-pin connectors and a 3.5 mm plug. A 2.5 mm or 4.4 mm balanced plug is available on request.

The sockets are standard 2-pin, so M20 also takes any of our 2-pin upgrade cables; see the AAW cable guide.

Compare

M20 vs A3H+ LUX

Two AAW monitors with NOVA in the nozzle. M20 pairs it with a large bass armature, all armature, in one voicing; A3H+ LUX adds a 10 mm graphene dynamic woofer and a precision armature, with a switch for four voicings.

M20 vs A3H+ LUX
Feature	M20	A3H+ LUX
Drivers	Large-format bass armature + NOVA	10 mm graphene dynamic + NOVA + precision BA
Crossover	2-way passive	3-way passive and acoustic
Tuning	One voicing	4-step switch: Vocal, Normal, Vocal+, Bass
Sensitivity / impedance	115 dB / 106 Ω	105 dB / 12 Ω
Shell	3D-printed, Electroless Immersion Gold faceplates	CNC aluminium, replaceable faceplates
Cable	Null Audio Brevity Plus; 3.5 mm, or 2.5 or 4.4 mm on request	Null Audio Epsilon; 2.5, 3.5 or 4.4 mm

In the box

Ready to listen

AAW M20 in-ear monitors One pair
Null Audio Brevity Plus cable 1.2 m (48 in), 0.78 mm 2-pin
Player plug 3.5 mm; 2.5 or 4.4 mm on request
AAW carrying case
Ear tips Assorted
Cleaning cloth

Specifications

Technical details

Monitor

Type: Universal-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
Enclosure: 3D-printed, AAW second-generation digital design; Electroless Immersion Gold faceplates
Connector: 0.78 mm 2-pin, detachable

Cable

Cable: Null Audio Brevity Plus copper, 1.2 m (48 in)
Player plug: 3.5 mm single-ended; 2.5 mm or 4.4 mm balanced on request

Service

Warranty: 1 year, on the monitors and the cable
Returns: 14 days from delivery, unused and in original packaging; 30% restocking fee, shipping not refunded. Defects are covered by the warranty.
Ships from: Singapore

Questions

Good to know

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.

Who is M20 for?

Bands and performing artists, worship teams and audio engineers, and anyone who wants an armature monitor with real weight in the low end.

Which cable fits M20?

M20 has 0.78 mm 2-pin sockets. Choose Standard 2-pin (0.78 mm) on any of our cables; see the AAW cable guide.

Is there a custom version of M20?

Yes. M20 Custom has the same two-armature design in shells made from your ear impressions; see how to order custom IEMs.

What warranty and returns apply?

M20 has a 1-year warranty on the monitors and the cable. 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. Most countries get free shipping by EPAC, and FedEx Priority is free on orders of USD 250 or more. In Singapore you can also pick up from our studio at 76 Playfair Road.

Next in the chain