DJI Mic Mini 2S In-Depth Review: First Sub-$200 Mic with 32-Bit Float Internal Recording, Four-Transmitter Setup Delivers a Knockout Punch

DJI's pace of iteration in the audio space is accelerating. Just over two months after the release of the DJI Mic Mini 2, the upgraded DJI Mic Mini 2S has officially hit the market. According to a review by tech media outlet Leitech, this product—positioned as a "low-cost professional microphone for advanced creators"—has a major trump card: it brings 32-bit float internal recording, previously reserved for flagship products, down to the sub-$200 price tier, aiming to solve the industry-wide pain point of wireless microphone audio files being ruined by signal interference.

In terms of pricing, the DJI Mic Mini 2S is available in several kit options. The two-transmitter kit with a charging case is priced at 1,199 yuan (approximately $177) and includes a set of multi-colored magnetic faceplates. The one-transmitter standard kit and the smartphone kit are both priced at 629 yuan (approximately $93). A standalone transmitter costs 399 yuan (approximately $59). Additionally, DJI has collaborated with illustrator Victo Ngai on a "Time Series" collection of magnetic faceplates, featuring four Eastern aesthetic designs—Dawn, Verdant Rush, Blazing Blossom, and Refined Gold—priced at 199 yuan (approximately $29).

Design Retains Lightweight DNA, Artistic Collaboration Enhances Wearability

From a design standpoint, the DJI Mic Mini 2S retains the rounded square shape of its predecessor, with a semi-transparent matte finish and a pickup grille on top. The overall aesthetic remains DJI's signature minimalist restraint. In terms of wearing comfort, the transmitter weighs approximately 12g without the magnet—1g heavier than the Mini 2—but when clipped onto a collar, it achieves an almost "imperceptible wear" feel without tugging on clothing. The magnetic back clip supports rotational adjustment, allowing users to flexibly change the microphone's direction as needed.

This time, DJI has introduced artist-collaboration faceplates with Victo Ngai, attempting to break away from the cold, industrial feel of utilitarian products. The review notes that a mere 12g transmitter clipped to a lapel often becomes part of the user's overall look. The artistic faceplate design adds textural detail while maintaining a low profile, giving the microphone a fashion-accessory dimension beyond its functional role.

32-Bit Float Internal Recording: A Knockout Punch in the Sub-$200 Segment

Internal recording is the core upgrade of the DJI Mic Mini 2S. In the sub-$200 wireless microphone segment, internal recording capability was previously almost non-existent. If signal interference or an unexpected disconnection occurred on set, the audio file was simply ruined. The Mini 2S transmitter has 14.5GB of built-in storage and supports both 24-bit and 32-bit float internal recording formats. In the default 24-bit mode, it can record for approximately 23 hours; switching to 32-bit float internal recording still yields around 22 hours.

The technical advantage of 32-bit float internal recording lies in its extremely high dynamic range. Compared to traditional 16-bit or 24-bit audio, 32-bit float recording allows details to be easily recovered in post-production even when volume fluctuates wildly or sudden loud noises occur, completely eliminating "clipping distortion." Through the DJI Mimo App, users can conveniently activate the internal recording function and choose to output either raw files or noise-reduced finished files.

Data transfer efficiency has also been optimized. The charging case supports direct copying of the transmitter's internally recorded files, with transfer speeds up to 34MB/s—roughly double that of the Mic 3. In real-world tests, copying a half-hour 24-bit audio file took only about 8 seconds, significantly boosting material export efficiency for video creators.

AI Noise Cancellation and Tone Presets: Tuning Audio Like "Choosing a Filter"

In terms of noise cancellation, the DJI Mic Mini 2S has upgraded its chip processing power, employing an NPU for deep AI noise cancellation with two adjustable levels: Strong and Basic. The review shows that in an indoor environment with low-frequency air conditioning noise, the Basic level effectively eliminates background hum while preserving vocal detail. In high-noise scenarios like a rush-hour intersection, the Strong level suppresses tire noise and car horns, ensuring clean, crisp voiceover audio.

Additionally, the Mini 2S adds two levels of automatic gain control, including "Anti-Clipping" and "Loudness Equalization" modes, effectively handling sudden volume changes. Tone presets offer three styles—Normal, Bright, and Full—corresponding to balanced clarity, enhanced treble, and a rich, solid sound respectively. DJI has simplified complex EQ adjustments into a "filter selection"-style operation, lowering the post-production barrier for non-professional users.

Four-Transmitter Setup and Ecosystem Connectivity: Building a Creative Moat

The DJI Mic Mini 2S receiver supports simultaneous connection of four transmitters, a rare configuration in the sub-$200 segment. It supports four output modes: Mono, Stereo, Four-Channel, and Safety Track. The four audio tracks can be output independently, facilitating precise mixing for scenarios like podcast interviews and small-scale variety shows.

Cross-generational connectivity also reflects DJI's ecosystem commitment. The Mini 2S receiver can mix and match connections with the Mic Mini, Mic Mini 2, and current-generation transmitters; the transmitter is also backward-compatible with previous-generation receivers, protecting users' existing investments. In terms of ecosystem connectivity, the Mini 2S transmitter can connect directly to core DJI devices like the Osmo Pocket 4, Action 6, and Osmo 360 without needing a receiver. Its transmission protocol is not standard Bluetooth; the sampling rate reaches 48kHz 24-bit, delivering audio quality on par with a wired connection, and it supports direct control of noise cancellation from within the camera menu.

Regarding battery life, the transmitter lasts approximately 11 hours on a single charge, the receiver about 10 hours, and combined with a fully charged case, total battery life reaches 40 hours. The device supports fast charging—5 minutes of charging provides 1 hour of use—and the receiver can also be powered via a hot shoe or smartphone. In terms of wireless transmission range, the camera-version receiver has a maximum range of 400 meters.

Conclusion and Market Positioning

Leitech points out in its review summary that while the 300-to-600-yuan (approximately $44-$89) price segment is flooded with cheap microphone solutions, the DJI Mic Mini 2S is currently the only product that simultaneously combines 32-bit float internal recording, a four-transmitter-to-one-receiver setup, AI noise cancellation, and direct ecosystem connectivity. For advanced creators who already have some experience and want to improve audio quality on a limited budget, this device demonstrates extremely strong competitiveness in terms of "value for money." Of course, the product still has minor compromises, such as a slight increase in transmitter weight and a charging case that hasn't been further reduced in size, but overall, these minor flaws do not detract from its merits.