Handmade Universal / Custom In-ear Monitors


5-driver hybrid driver technology with 4-way proprietary active crossover brings true-to-life audio reproduction.





ADVANCED M5-5D Universal / Custom In-ear Monitors Frequency Response Graph


ADVANCED M5-5D driver 4 BA + 1 DD Hybrid Driver with Active Crossover
ADVANCED M5-5D in-ear monitors use a proprietary active crossover to blend 5 different drivers to harmonious aural bliss - 1 dynamic woofer, 1 balanced armature for mid-range, 1 armature for high's, and the other 2 dedicated armatures that pushes the treble extension far beyond.


Meticulously Handcrafted
ADVANCED M5-5D in-ear monitors are expertly handcrafted using only the bespoke and highest grade components.  Each unit goes through a specific set of procedure that includes 3D printing, hand-poured mould, grinding, laser-cutting, sanding and polishing.  This meticulous production procedure requires 4-6 weeks of lead-time from preparation of the material to the final assembly.  Once assembled, every M5-5D goes through a rigorous quality control process by the master technician, before finally getting approved and packaged. 

Proprietary Hybrid Driver Technology
The M5-5D is designed to be accurate, detailed and coherent from the ground up.  The dynamic woofer is designed and built from diaphragm level to reproduce extreme sub-bass, and the additional 4 balanced armatures each outputting the designated frequency range that extends up to 40kHz.  Our proprietary 4-way hybrid active crossover technology brings each driver together for minimum phase shift and optimized arrival timing of audio signal, which results in an unprecedented level of coherence in a multi-driver IEM.

Designed to Fit You
The M5-5D is crafted with medical-grade acrylic, which is one of the safest material to use for a wearable device that comes in contact with your skin.  Universal version of M5-5D is ergonomically designed after studying the shape of thousands of custom in-ear monitors.  We've taken a common denominator from all the different ear shape, and morphed them into the universal shape it is now.  Furthermore, the M5-5D is also offered in custom-fit, crafted to fit only your ear, should you decide to send us your ear impression.

Interchangeable 2-pin Silver-Plated Copper Cable
Included premium quad-braided silver-plated copper cable with a 3.5mm gold-plated plug uses 2-pin (0.78mm) termination that allows the cable and the monitors to be easily detachable.  M3 2-pin wireless conversion cable (sold separately) allows the M5-5D to be converted into a set of wireless earphones.

  • 1 2-pin silver-plated copper quad-braided cable
  • 3 pairs of black foam tips
  • 3 pairs of black single-flange silicone tips
  • 3 pairs of black dual-flange silicone tips
  • 1 CNC-machined aluminum carrying case
  • 1 leather cable tie
  • 1 microfiber cleaning cloth
  • 1 cleaning brush



Driver unit 4 BA + 1 DD hybrid driver with active crossover
Impedance 16ohm+/-15%
Sensitivity 114dB+/-3dB at 1kHz
Frequency response Ultra Wideband 10Hz – 40kHz
THD <1% at 1kHz
Input power 5mW
Cable composition Silver-plated copper
Cable length (SPC) 1.5M
IEM connector 2-pin (0.78mm)
Plug 3.5mm gold plated


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