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AAW Black Malus Custom
The same sixteen balanced armatures and 5-way crossover as Black Malus, 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 Epsilon cable.
At a glance
Custom shells from your ear impressions · Epsilon cable
Compare with other models
Measured by AAW on universal shells with one test setup. Custom shells carry the same tuning, though fit, tips and seal shift the result, above 8 kHz most of all.
Open the measurements page →
Drivers
Four of AAW’s own vented miniature armatures work as power woofers, giving the low end real extension and physical weight from a compact footprint, without clouding the midrange. Four more are given to the midrange alone, so voices keep their body when an arrangement fills up; two bridge the upper mids, and two shape the edges, the transients and the cues of space.
At the top, four super-high armatures sit in a 3D-printed manifold close to the eardrum, so their pressure is not lost down a long tube and the resonance of tubed designs falls away. A 5-way passive crossover holds each group to its band.
Design
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
Black Malus Custom comes with our Epsilon cable with 2-pin connectors. Choose the player plug in the configurator: 2.5 mm or 4.4 mm balanced, or 3.5 mm single-ended.
You can also upgrade to a higher-tier Null Audio cable when you order.
Compare
Same sixteen armatures, 5-way crossover and Epsilon cable. The custom is made from your ear impressions, in shells you design; the universal has a stainless steel mid-case and a hand-poured opal faceplate, and fits with ear tips.
| 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 | Hand-poured opal faceplate |
| Drivers | 16 BA | Same |
| Crossover | 5-way passive | Same |
| Cable | Null Audio Epsilon; plug chosen in the configurator | Null Audio Epsilon; 2.5, 3.5 or 4.4 mm |
| Socket | Recessed or flat 2-pin | 0.78 mm 2-pin |
| Ready in | 6–8 weeks from receiving your impressions | Ships from Singapore |
| Returns | No change-of-mind returns; 30-day free refit | 14 days, unused |
In the box
Process
Fit
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
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
Questions
The fit and the look. The sixteen armatures, the 5-way crossover and the Epsilon cable are the same. 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 stainless steel mid-case and a hand-poured opal faceplate, and fits with ear tips.
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.
Sixteen balanced armatures per side in five bands: four AAW vented power woofers for bass, four for the midrange, two for the upper mids, two for the highs and four super-high drivers, joined by a 5-way passive crossover.
In a conventional design, the highest frequencies travel down a long tube and lose pressure on the way, picking up tube resonance. Black Malus places its four super-high armatures in a 3D-printed manifold near the eardrum, so the treble arrives without that loss.
Our Epsilon cable, with the player plug you choose in the configurator. You can upgrade to a higher-tier Null Audio cable when you order; see the AAW cable guide.
6–8 weeks from the day we receive your ear impressions or scan, plus shipping.
We refit it for free within 30 days of delivery. For overseas orders, return shipping is charged separately.
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.
Next in the chain
Routes picked for this page, all from the same bench in Singapore.
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