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

ACH Ceramic Universal In-Ear Monitor - Null Audio

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ACH Ceramic Universal In-Ear Monitor

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

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AAW ACH is a universal-fit tri-hybrid 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 Ethos cable.

A 10 mm dynamic woofer, AAW’s NOVA open-vented armature and a 7-layer ceramic super tweeter, laser-welded to the woofer as one coaxial unit, with a 3-way passive crossover and interchangeable faceplates.

10 mm dynamic + ceramic + NOVA
3-way crossover
Interchangeable faceplates
Ethos cable
Flight and 6.35 mm adapters

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 ACH

Three drivers. Three tiers.

ACH is AAW’s second tri-hybrid, after the acclaimed Canary: a dynamic woofer, a NOVA open-vented armature and, in place of Canary’s electrostatic, AAW’s own ceramic super tweeter.

Fewer drivers and a gentler price, but the same three-tier thinking: each driver given one band, and the three made to work as one.

3 Drivers: 10 mm dynamic, NOVA and a ceramic super tweeter
7 Layers in the ceramic tweeter membrane
108 dB Sensitivity
20 Ω Impedance

At a glance

The build behind the listen

Ceramic super tweeter · interchangeable faceplates · Ethos cable

10 mmDynamic woofer
7-layerCeramic super tweeter
NOVAOpen-vented armature
3-wayPassive crossover

Key features

10 mm dynamic woofer
7-layer piezoelectric ceramic super tweeter
Tweeter laser-welded to the woofer, coaxial
NOVA open-vented armature at the nozzle
Interchangeable faceplates, fixed with hex screws

Sensitivity: 108 dB SPL @ 1 kHz
Impedance: 20 Ω @ 1 kHz
Total harmonic distortion: ≤ 0.5% @ 1 mW, 1 kHz
Frequency range: 10 Hz – 40 kHz
Drivers: 3 per side
Connector: 0.78 mm 2-pin

Tweeter

Seven Layers of Ceramic

ACH’s treble comes from AAW’s own ceramic super tweeter: a piezoelectric membrane built up in seven layers, the first of its kind. It is laser-welded directly onto the dynamic woofer’s housing, so the two form a single coaxial unit, rigid and free of stray vibration.

It takes the place of the electrostatic tweeter in AAW’s Canary, as a more affordable alternative.

Drivers

Three Tiers, One Coaxial Heart

A 10 mm dynamic woofer carries the low end. AAW’s NOVA open-vented armature takes the mids and highs, set deep in the stainless steel nozzle, close to your eardrum, which removes the pressure loss and tube resonance of a conventional tubed armature.

A 3-way passive crossover divides the work between the three, so each driver plays only the band it does best.

Faceplates

A Face You Can Change

The faceplates are held by hex screws and can be swapped by hand. Other faceplate designs are available, and so are faceplates made to your own design.

Built for band performances, emerging artists and worship teams, and for anyone who listens closely.

In the box

Ethos Cable Included

ACH comes with our Ethos cable, 1.2 m long: multi-stranded UPOCC copper with silver plating, twisted in pairs under an ultra-flexible clear jacket.

A flight adapter and a 6.35 mm (1/4") adapter are in the box too.

Compare

ACH vs Kingfisher

Two AAW tri-hybrids on one platform: the same three drivers, crossover and specifications. ACH is the listening monitor with an Ethos cable; Kingfisher is its gaming twin, with a detachable boom microphone on its cable.

ACH vs Kingfisher
Feature	ACH	Kingfisher
Drivers	10 mm dynamic + ceramic super tweeter + NOVA	Same
Crossover	3-way passive	Same
Sensitivity / impedance	108 dB / 20 Ω	Same
Faceplates	Interchangeable, hex screws	Same
Cable	Null Audio Ethos, silver-plated UPOCC copper, twisted in pairs	Null Audio Ethos gaming cable, quad-braided, with boom microphone
Microphone	None	11 mm condenser on a detachable MMCX boom

In the box

Ready to listen

AAW ACH in-ear monitors One pair
Null Audio Ethos cable 1.2 m
AAW carrying case
Flight and 6.35 mm adapters
Ear tips Assorted
Cleaning cloth

Specifications

Technical details

Monitor

Type: Universal-fit hybrid in-ear monitor
Drivers: 10 mm dynamic woofer, 7-layer piezoelectric ceramic super tweeter, NOVA open-vented armature
Crossover: 3-way passive
Sensitivity: 108 dB SPL @ 1 mW, 1 kHz
Impedance: 20 Ω @ 1 kHz
THD: ≤ 0.5% @ 1 mW, 1 kHz
Frequency range: 10 Hz – 40 kHz
Faceplates: Interchangeable, fixed with hex screws
Nozzle: Stainless steel
Connector: 0.78 mm 2-pin, detachable

Cable

Cable: Null Audio Ethos, multi-stranded UPOCC copper with silver plating, 1.2 m
Adapters: Flight adapter; 6.35 mm (1/4") adapter

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

A Gem

Smooth listening for both male and female vocals.

The product I received is defective.

The product I received is defective.

The design is pretty.
However, it is defective.
The balance of the left and right volumes is different.
This product is not a stereo pair matching.

Nice Sound!

ACH has deep bass and characteristic firm treble, head room is very large.
In say Japanese, " Sukoshi Don Shari".
But, Mid sound is so natural.
So, I think, May be, Nova Driver is being good expression.
ACH Sound is so pleasant.

Unbittable quality and price

I just got my ach, and it was really amazing. The most impressive thing is the highs, the ceremic twetter really sounds like the electrostatic driver, and gives a very crysp highs with no irritating peaks. The mid and bass are also well balanced. This is definitely one of the best universal IEM in my collection! I can't believe that you sell it at such low price ! Anyway, it's incredible !

Nice

Pros: very nice sound. clear high freqs, detailed. subdued bass, but still clear and detailed.
Cons: A little bit heavy, so have to carefully choose ear tips for good fit (I have to make custom ear tips). No so good noise isolation. So with weight and isolation it s perfect for indoor usage but in crowd noisy places it's not so good.

ACH Ceramic Universal In-Ear Monitor

5 stars: 9 (82%)
4 stars: 2 (18%)
3 stars: 0 (0%)
2 stars: 0 (0%)
1 star: 0 (0%)

A Gem

Smooth listening for both male and female vocals.

The product I received is defective.

The product I received is defective.

The design is pretty.
However, it is defective.
The balance of the left and right volumes is different.
This product is not a stereo pair matching.

Nice Sound!

Unbittable quality and price

Nice

good

I think that it is good to make it.
I think the sound quality is beautiful.
The faceplate on the right side is loose, but I am troubled because there is no tool to tighten it.

3dプリンタシェル

シェルが耳に合わず、痛みがでる。音質は問題ない

ACH Ceramic Universal In-Ear Monitor

Acho ceramic

Great IEM, very airy and open. Very transparent and clear.

good

The new 3d printed shell fits very well and the sound is just entry level.

Powerful bass and clear treble

It is great value for money!
I really like this product, so I hope that with CIEM version will be released too.

Where can I get the changeable face plates ?

Null Audio

Exchangeble faceplate available for custom artwork. kindly place order for ACH and send us the image of custom artwork to be printed on faceplate, to receive extra pair of faceplate.

Hi, I just got my ach, it sounds really great. I just want to ask if there is other interchangable faceplates available so that I could get one. Thanks.

Null Audio

thx, happy to do so. Exchangeable faceplate is for custom artwork. Kindly send you own image and we will print it on faceplate.

How different between ACH CERAMIC UNIVERSAL IN-EAR MONITOR and KINGFISHER CERAMIC GAMING UNIVERSAL IN-EAR MONITOR except cable?

Null Audio

Hi Tak,

Their tunning is also slightly different as Kingfisher is more oriented towards gaming sound setting.

Can the face plate design be published in the catalog?

Null Audio

The ACH has been discontinued. Please see our current AAW universal IEMs on the website.

Hi there!

Would the ACH ceramic IEMs be hard to drive? Can I get by by just using an iphone?

Thanks!

Null Audio

The ACH has been discontinued. Please see our current AAW universal IEMs on the website.

Hi.
Will the earphone price be raised after the end of pre-orders and the start of mass production?
Will interchangeable faceplates be available as an option? Or sold separately only?
Thank!

Null Audio

The ACH has been discontinued. Please see our current AAW universal IEMs on the website.

Questions

Good to know

What is the driver configuration?

Three drivers in three tiers: a 10 mm dynamic woofer for the bass, a NOVA open-vented armature in the nozzle for the mids and highs, and AAW’s 7-layer ceramic super tweeter, laser-welded onto the woofer’s housing as one coaxial unit. A 3-way passive crossover joins them.

What is a ceramic super tweeter?

A piezoelectric tweeter: a thin ceramic membrane, here in seven layers, that flexes when the signal is applied to it. AAW uses it in ACH and Kingfisher as a more affordable relative of the electrostatic tweeter in Canary.

Who is ACH for?

Musicians in a band, emerging artists, worship teams, and anyone who wants the three-tier sound of a flagship hybrid without a flagship’s driver count.

How is ACH different from Kingfisher?

The cable. The drivers, crossover and specifications are the same. Kingfisher comes with a gaming cable that carries a detachable boom microphone; ACH comes with our Ethos cable and travel adapters.

Which cable fits ACH?

ACH 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?

ACH 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.

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