Epic Hybrid Quad Drivers HiFi IEMs

The Hybrid Triple BA & Single Dynamic Drivers HiFi In-Ear Monitor + The Versatile Portable HiFi System. A pair of high-end Earphones That cater for all usage scenarios.

Triple Balanced Armature Drivers

Featuring Knowles 33518 high-frequency driver unit, and Knowles hybrid 30017 dual balanced armature drivers are engineered for the precise, flawlessly reproduces the mid to high-frequency sound.

10.2mm Hidizs Patented Dynamic Diaphragm

Brand new Hidizs patented 10.2mm Macromolecule diaphragm offers more consistent internal loss across all frequencies to deliver subtle highs and smoother bass.

Gold-Plated Interface

Gold-plated interface with two PINs 0.78mm plugs, it realizes easy attachment with nearly all jacks, strong and durable.

Uncompromising Hand-Polished Aluminum Look

The durable aluminum alloy cavity is CNC machined and enhances the sound cohesion greatly. The cover pad made of smooth resin with brushed metal, a flawless high-gloss surface, MS4 combines cutting-edge technology with the finest craftsmanship. 


Headphones Type

Closed, Hybrid quad drivers


12 ohms (at 1 kHz)



Frequency Response


No. of Drivers

3 BA Drivers & 1 Dynamic Driver


BA Drivers: Knowles 33518 Driver / Knowles 30017 Dual Drivers
Dynamic Driver: 10.2mm Hidizs Newly Designed High-sensitivity Polymer Diaphragm ( Dual Magnetic Circuits & Dual Cavities)


S/M/L/XL silicone ear tips

Cable Length

1.2 m

Cable Material 

99.999% OFC copper


16g/ 0.56 Oz