audio-sound @ hatena

An audio review & news blog. The volume should not exceed 80 dB is recommended. I usually adhere to the safe-listening style by WHO. Please note that my aural impressions and interpretations of measurements are also made from a safe-listening style.

(News) iF Classic 31: Three Balanced Armature Drivers Earphones

iF Classic 31

iF Classic 31


The IEM "iF Classic 31" equipped with 3BA has been released at Linsoul.



  • Three Balanced Armature Drivers Earphones & crossover technology
  • Attractive Appearance
  • Ergonomic Design.
  • IP57 Sweat-proof And Dustproof
  • Interchangeable Cable Design



  • Frequency response: 18-20KHz
  • Plug: 3.5mm
  • Impedance: 18 ohms
  • Distortion Rate: ≤1%
  • Noise reduction: ≥40dB
  • Driver unit: 3 Balanced Armature Drivers



Three Balanced Armature Drivers Earphones & crossover technology

iF Classic 31 is equipped with three balanced armature drivers. It can completely cover the frequency response range of 18HZ-20KHZ. With this set up, this model excels in bass, rich in details, pure and powerful. In retaining the advantages of high resolution and high frequency performance at the same time also has a dynamic unit broad sound stage characteristics. Experienced acoustic engineers at iF Classic 31 have arranged the 3-driver configuration in a three-way frequency division using professional crossover technology. This allows the drivers to perform perfectly while maintaining low distortion levels.



Attractive Appearance

The whole earphones are made of handmade transparent crystalline cavity material, and every color match is thoughtful, natural. The classic leaf vein faceplate design makes your earphones unique. Underneath the transparent appearance, there are precise components and hand-welded micro-circuits, which are also iF.'s demanding attention to detail and adherence to craftsmanship. The smooth mirror porcelain glaze coating brings a delicate touch and excellent anti-scratch performance. Stylish, unique and full of texture. It is not only a medium to enjoy music, but also an excellent accessory.



Ergonomic Design

Combined with excellent ergonomic design, it will not feel uncomfortable to listen to music for a long time. Lightweight ear hooks keep the earphones securely, even during vigorous movement.



IP57 Sweat-proof And Dustproof

IP57 waterproof and dustproof thanks to the sealed cavity and glazed coating, IP57 waterproof rating offers more possibility to use for sports or even in the rain. The earphones are more durable and suitable for many environments.



Interchangeable Cable Design

Adopt standard MMCX connector, it can be replaced with other earphone cable and turned into TWS earbubs in seconds. Get more sound quality experience, matching the mainstream IEM in the market.



Pricing & Availability

The iF Classic 31 is available for $199.99 on Linsoul and others.


iF Classic 31

iF Classic 31

iF Classic 31