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FIDUE A31s In Ear Isolating Earphones with Mic - Red

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  • Balanced sound with unparalleled comfort

  • One-button remote compatible with most smartphones

  • Small and lightweight design

  • Double flange silicone eartips

  • Balanced sound with strong bass, smooth mids and defined highs

FIDUE A31s In Ear Isolating Earphones with Mic - Red

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Experience portable high fidelity sound in an affordable package. FIDUE A31s embody everything a modern earphone should: superior sound, smartphone compatibility, external noise isolation and long term comfort. High fidelity sound is provided with a balance of strong bass, smooth mids and well defined highs.

With small housing design and long sound tube the A31s differs from conventional earphones in creating big sound in a small space. Micro-dynamic 8mm drivers funnel superior sound directly into the earcanal. Double flange eartips provide excellent noise isolation and offer unparalleled comfort for long-term listening.

Integrated with call answering button compatible with most smartphones, the FIDUE A31s will work with iPhone, Android, Window and Symbian devices. The integrated remote control allows the user to have full control of music. Calls can also be answered and ended by using the single button remote.

Incredibly small earphones with balanced sound.

Fidue A31s

Full Control
Call answering button compatible for most mobile phones (iOS, Android). The remote lets you play, pause and skip to the next or previous track. Calls from the phone can be answered with the touch of the button.

Unique Design
The unique small housing design and long tube combined with high quality double flange silicone eartips offers excellent noise reduction effect and unparalleled comfort for long-term listening sessions.

Sound Signature
Well balanced sound with strong bass response, smooth mids and well defined highs resulting in a pure high fidelity listening experience.

Fidue A31s



  • Driver Unit: 8mm Dynamic Driver
  • Frequency response: 18 Hz - 20000 Hz
  • Rated impedance: 19Ω+-10%
  • Sensitivity: 101+-3db
  • Distortion: 3%
  • Rated Power: 10mW
  • Plug: 3.5mm mini stereo gold-plated plug
  • Cable: 1.2m


  • Sensitivity: -42+-3dB
  • S/N Ratio: >55dB

Fidue A31s


  • Call answering button compatible with most smartphones (iOS, Android)
  • Small and lightweight housing and sound tube design
  • Double flange silicone eartips offer high noise isolation
  • Unparalleled comfort for long-term listening
  • Suitable for portable media players with standard 3.5mm connection
  • Balanced sound with strong bass, smooth mids and well defined highs
  • Durable twisted PU coated cable built to last



  • FIDUE A31s Red
  • Double flange silicone eartips (S/M/L/XL)
  • Carrying case
Product TypeEarphones
Feature KeywordComfortable, Ear Canal, In Ear, Lightweight, Microphone, Noise Isolation, Portable, Smartphone
Recommended UseDigital audio player, Mobile phone, Portable audio system
Manufacturer Warranty1 Year
Included AccessoriesDouble flange silicone eartips (S/M/L/XL), Carrying case
Part NumberA31s-Red
Headphone Fit TypeIn-Ear
Headphones TypeHeadphones - binaural
Cable EntryN/A
Cable Length1.2m
Connector AngleStraight
Connector TypeHeadphones (3.5 mm stereo jack)
Detachable CableNo
Driver Size8mm
Driver TypeDynamic
Connectivity TechnologyWired
Earcup DesignN/A
Frequency Response18Hz - 20kHz
Headphones Form FactorIn-Ear
Headphones TechnologyDynamic
Number of DriversSingle Driver
Sound Isolation (dB)No
Sound Output ModeStereo
Smartphone CompatibilityUniversal 1 Button
Smartphone ControlsCall Answer/Hangup, Music Track Fwd/Back
Total Harmonic Distortion (THD)3%
Wireless TechnologyN/A

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Customer Reviews

Good product
by Timothy on 13/04/2018
So far I've had the earphones for only a few weeks. My only concern is the wires have not yet straightened out. Hopefully this is remedied after further use
Excellent Value for Money
by CornwallDog on 09/04/2018
Lovely sounding earphones which are supremely comfortable.

The supplied silicone tips are okay, but the double flange tips are the ones to use - they fit really well and the isolation is excellent, to the extent that I missed the doorbell whilst wearing them.

Decent microphone as well, excellent all-rounders for a stupidly low price. My only challenge now is finding some replacement double flanges for when these ones wear out.
Great value
by Oli S on 08/04/2018
SQ for the price was acceptional and just as importantly, so was the fit. Only minus point would be the wires, which are extremely rigid and tangleable. For a pair of inexpensive backup earbuds though they’re great.

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