BitTradeOne “Bimimi” Binaural Mic Review: Great for ASMR, Tricky for Wireless Earbuds

This is the English edition of a review from my Japanese YouTube channel, iestaLife. I review gadgets from my home studio in Japan, so product links go to Amazon Japan.

Quick take

I bought the BitTradeOne "Bimimi" binaural microphone, a mic shaped like a pair of human ears, hoping to capture what earphones really sound like for my reviews. For ASMR, headphones and ambient sound it is a well-made, good-value mic. For recording wireless earbuds, though, radio interference tends to add noise, so it did not quite fit what I wanted it for.

What I tested

BitTradeOne binaural microphone "Bimimi", a mic popular for ASMR and ambient recording
Powered over USB-C: plug it in and it switches on
Comes with a base that mounts on a tripod
Recorded headphones and live sounds, then fitted AirPods to the ears and recorded through them

What I found

The build is careful and tidy, and the mic is compact and easy to handle. The tripod base made setup simple.
Recording headphones and live sounds, such as touching the ears, came out natural and clear.
With AirPods fitted, the in-ear detection sensor sometimes failed to trigger, because the ear shape is a little flat. The ear canal is also slightly narrower than a real ear, so you may need to change the ear-tip size.
The biggest issue: with wireless earbuds in, their radio signal interfered and crackling noise easily crept into the recording. I wanted to compare wireless earbuds precisely, with no processing, so this was a real drawback for my use.

AirPods fitted to the Bimimi binaural mic — Fitting AirPods: the in-ear sensor did not always react

Who it’s for

If you want to start making ASMR videos, or record headphones and ambient sound, the Bimimi is a polished, good-value mic. If your goal is to record and compare wireless earbuds, expect to work around radio interference. I put sample recordings made with the Bimimi at the end of the video, so try listening with earphones.

ASMRマイク「美耳」レビュー。ワイヤレスイヤホンの録音もできる？（ノイズのるかも）

The video is in Japanese.

Limitations

I tested a single unit with AirPods only; other earbuds may fit or interfere differently. The noise I describe is from my recording setup and may vary with your environment. Check the Amazon Japan listing for shipping to your region.

Products

BitTradeOne binaural microphone "Bimimi": on Amazon Japan

The Amazon Japan links above are affiliate links. As an Amazon Associate, I earn from qualifying purchases. Check the listing for the exact model, current price and shipping availability in your region.

More reviews in English