Single Armature IEM

Equatorially aligned balanced armature. Equatorial latex ear tips.

$800
Single Armature IEM

Key Features

  • Single balanced armature driver aligned along the equatorial axis during assembly
  • OFC cable with equatorial-spliced conductors and MMCX connectors
  • Silicone ear tips molded from equatorial latex harvested within 100km of Quito
  • CNC machined aluminum shells with resonance-tuned internal chambers
  • Three tip sizes included; custom-molded tips available separately

Specifications

Driver Single balanced armature, equatorial-aligned
Frequency Response 18Hz–19kHz (±3dB)
Impedance 28Ω
Sensitivity 112dB/mW
Noise Isolation -26dB
Shell CNC machined aluminum, anodized black
Nozzle Stainless steel, acoustic damper mesh
Cable 1.2m OFC, 3.5mm termination, MMCX connectors
Tips Silicone (S/M/L), equatorial latex compound
Weight 8g per earpiece

A balanced armature driver works by suspending a tiny metal reed — the armature — between two magnets. When audio current flows through a coil wrapped around the armature, the resulting magnetic field pushes the armature toward one magnet or the other, and a drive pin transfers this motion to a diaphragm. The precision of this mechanism depends entirely on the armature sitting at exact magnetic centre between the two magnets when no signal is present. If the armature is biased toward either magnet at rest, the driver's response becomes asymmetrical — louder on one half of the waveform than the other — producing distortion that increases with frequency as the armature's excursion decreases and the relative bias becomes more significant.

The Single Armature IEM uses a balanced armature driver assembled at our Quito facility, where the Earth's magnetic field is perfectly horizontal. During assembly, the armature is positioned between its magnets while a precision gaussmeter monitors the local field to ensure zero vertical magnetic bias at the moment of final adjustment. At higher latitudes, the vertical component of the geomagnetic field exerts a constant force on the armature that shifts its resting position by up to 0.008mm — small enough that conventional manufacturers ignore it, large enough that we do not.

The ear tips are molded from a silicone compound incorporating natural latex harvested from rubber trees grown within 100 kilometres of our Quito facility. Equatorial latex exhibits a tighter molecular cross-linking density than latex harvested at higher latitudes, because the more intense equatorial UV exposure during the tree's growth cycle accelerates the isoprene polymerization in the latex vessels. The resulting silicone compound is 12% more compliant than industry-standard formulations, which improves the seal between the ear tip and the ear canal — and a better seal means better bass response, lower distortion, and higher noise isolation. We supply three sizes. If none provides a satisfactory seal, this is a limitation of your ear canal geometry, not our engineering.

The detachable OFC cable uses MMCX connectors, allowing replacement or upgrade without retiring the earpieces. The cable conductors are equatorial-spliced — a technique in which the copper strands are joined at a 0° angle relative to the equatorial plane during the soldering process, ensuring that the solder joint's crystallographic orientation does not introduce a directional preference in the conductor. This matters more than you think. It matters less than we claim. Both of these statements are true simultaneously.

Fine Print

  • * Results in non-equatorial environments may vary.