Magaosi is a Chinese brand that produces iems. They started out with the K3 and has since improved it to the K3 HD. Since then, they have released the K5, X3 and Y3. Recently, there is release of the MGS-401. I would like to thank Penon Audio and Magaosi for the review unit of MGS-401. The MGS-401 is available on Penon Audio .



  • Driver Configuration: 4 Balanced Armature
  • Impedance: 18Ω
  • Frequency Response: 10Hz-40000Hz
  • Sensitivity: 118db

Unboxing & Accessories

The MGS-401 comes in a black package with protective cover that sports the brand name, model name and description of the iem. At the back of the protective cover, there are specifications of the MGS-401. The black package has a transparent film that shows the iem. After opening the package, there are the iem, 3.5mm single ended cable, 2.5mm balanced cable, user manual and semi-hard carrying case which contains packs of tips.

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