The MoonDrop Armature Art 12 (AA12) is an in-ear monitor with an all balanced-armature design. It uses 12 drivers in a 4+4+4 three-way crossover, with equal driver counts for bass, mid-range and treble.
The bass module has four custom open-back stainless steel diaphragm drivers in a four-in-one design. The mid-range uses two sets of two-in-one composite drivers with aluminum-magnesium alloy diaphragms, mixed through a Y-shaped acoustic structure. The treble module has four custom miniature aluminum-magnesium alloy diaphragms. The complex acoustic structure is made with high-precision DLP 3D printing.
The earphones have 0.78 mm 2-pin sockets, so the cable can be replaced. The included cable is high-purity copper with a Litz structure and a screw-fixed interchangeable plug. The included ddHiFi ST35 ear tips are made of two-color medical-grade silicone with a skin-friendly coating.
- Drivers
- 12 balanced armature drivers: four-in-one bass module, four mid-range drivers, four-in-one treble module
- Crossover
- 4+4+4 three-way
- Frequency response
- 6Hz-34kHz
- Effective range
- 20Hz-20kHz (IEC60318-4, -3dB)
- Impedance
- 5Ω ±15% (@1kHz)
- Sensitivity
- 121dB/Vrms (@1kHz)
- THD
- ≤0.6% (@1kHz, 94dB)
- Earphone jack
- 0.78 2-pin
- Cable plug
- 4.4mm balanced / 3.5mm single-ended (interchangeable)
- Cable
- High-purity copper, Litz structure
- Ear tips
- ddHiFi ST35 two-color medical-grade silicone, sizes S, M, L
- In the box
- Earphones, cable with 4.4mm balanced and 3.5mm single-ended plugs, storage case, anime-girl card, ear tips (S, M, L), manual, wearing guidance card, certificate, service card