DJI Mic Mini 2S Review: Small Mic, Useful Audio Backup

The standout feature in this DJI Mic Mini 2S review is one you might never hear in the finished video: its internal audio backup. Alongside the audio going to your camera, the little transmitter can keep its own recording, giving you another file to turn to when a take matters. Adding 32-bit float internal recording to the Mini format makes this a much more interesting microphone than another small wireless system with a fresh coat of paint.

After using it with a Sony a7S III and DJI Osmo Pocket 4P, the appeal is its simplicity. The receiver has a proper gain dial, the microphones are easy to mount, and moving between camera setups feels straightforward. At A$279 for the two-transmitter kit with receiver and charging case, it brings a useful safety net without losing what made the Mini series approachable.

Disclosure: DJI supplied the microphone for review, and the accompanying video review was sponsored by DJI. The opinions expressed are the reviewer’s own.

DJI Mic Mini 2S review: simple controls still matter

There is no touchscreen on the receiver, and that is part of the attraction. The tactile dial lets you adjust gain from minus 12dB to plus 12dB without opening a menu. When you are already managing framing, camera settings and whatever your subject decides to do next, a physical control is welcome. It keeps an everyday adjustment where you can reach it.

That straightforward approach carries over to the camera workflow. During testing, one microphone was connected to the Sony a7S III setup while another worked with the Pocket 4P through OsmoAudio. These were separate microphone-to-camera connections, rather than a demonstration of one transmitter broadcasting to both cameras. The useful part was how easily the kit accommodated different ways of recording.

For compatible DJI cameras, direct OsmoAudio connection removes the need for a separate receiver. The receiver remains useful when moving to a conventional camera, phone or computer setup. If the camera side interests you, our DJI Osmo Pocket 4P review explores that wider system.

DJI Mic Mini 2S internal recording and 32-bit float

The Mini 2S can record internally without a receiver or camera attached. It can also keep a separate file while audio is being recorded with video, which makes it much more versatile than the Mic Mini 2. You can use the transmitter as a small standalone recorder, then transfer the audio later. More importantly, a problem with the wireless camera feed need not mean losing the microphone’s own recording.

There is an important setting to change first: 32-bit float internal recording is disabled by default and must be enabled through DJI Mimo. Each transmitter has approximately 14.5GB of storage, allowing around 28 hours in 24-bit mode or 22 hours in 32-bit float. The headline 28-hour figure is not 28 hours of 32-bit float recording, and neither figure describes battery endurance.

Holding the microphone close to the mouth formed part of the loud-level demonstration, but that alone does not establish how much distorted audio can be recovered in editing. The practical benefit of 32-bit float is greater flexibility when adjusting recording levels afterwards. DJI also acknowledges that the microphone’s physical characteristics still limit effective dynamic range. It is useful insurance, rather than a cure for every recording mistake.

Internal recordings can be saved as an Original File or an algorithm-enhanced Edited File, with Edited File selected by default. Choosing Original File leaves noise cancellation and voice tone processing out of the internal recording even if they affect the signal sent to the receiver. Check that setting before assuming your backup will sound the same as your camera track.

DJI Mic Mini 2S sound quality, noise cancellation and range

Speech quality and connection reliability were strengths in the outdoor recording. The range demonstration went to approximately 15 metres without a reported problem, making it a useful example of the sort of separation you might use for a piece to camera. That is a reassuring result for everyday pieces to camera, although the demonstration did not explore maximum range.

There was also a less conventional mounting exercise: clipping the microphone to a dog’s collar for a run around with a ball. That adds some welcome variety to a microphone test, although the more useful everyday finding is how easily the transmitter moves between a clip, magnetic attachment and handheld use. A willing canine assistant is optional.

Noise cancellation was switched during outdoor recording with wind and passing traffic, including a motorbike in the background. Having Basic and Strong settings gives you a useful choice when the surroundings change. It is worth listening to both with your own voice and location to find the balance you prefer.

Regular, Rich and Bright voice presets provide another way to shape speech. Adaptive Gain Control adds Clipping Control for sudden spikes and Loudness Balance for changing volume. Noise cancellation and Adaptive Gain Control are off by default; spending a few minutes in Mimo is worthwhile before heading out.

Small microphones with a bit of personality

The magnetic front covers are more enjoyable than they have any right to be. Matching a green faceplate to a green shirt is a small touch, but it makes a visible microphone feel more deliberate. Swapping covers is quick, with a satisfying magnetic attachment, and there is enough flexibility to make the microphone blend into an outfit or stand out.

The transmitter weighs approximately 12g excluding its magnetic clip and magnet. The supplied clip gives you options for orientation, while the separate magnet lets you attach it through clothing. Those choices are more useful than trying to make a single mounting arrangement work with every shirt. The front covers are specific to the Mini 2S, so do not assume older Mini covers will fit.

The charging case stores two transmitters, the receiver and core accessories, including the camera audio cable. There is room for a Mic Series Mobile Receiver too, although that receiver is sold separately from the A$279 kit. With transmitters docked, the Mini 2S case also supports copying their recordings to compatible computers or smartphones.

Four microphones does not mean four tracks everywhere

The Mini 2S receiver supports up to four transmitters, mixing Mic Mini, Mic Mini 2 and Mic Mini 2S models with the appropriate firmware. That is a useful expansion path for interviews and group recordings, though this two-transmitter kit needs extra microphones to get there. Four-person recording was not part of the testing described here.

Four-channel output has a narrower set of requirements than four-transmitter pairing. DJI’s detailed qualification specifies certain Sony cameras with the separately purchased DJI Mic Series Camera Adapter, plus certain computer software using USB. An ordinary 3.5mm camera connection should not be assumed to provide four independent tracks. Check your exact setup before buying the microphone for that feature.

Direct phone Bluetooth has its own limits: one transmitter can act as the audio input at a time, and recording requires a compatible third-party app rather than the phone’s native camera app. The receiver connection is the more relevant route for a two-person phone setup. Cross-generation compatibility is also model-specific, rather than permission to pair every DJI microphone with this receiver.

DJI Mic Mini 2S battery life, Australian price and verdict

Battery life was viewed positively during use, but there was no timed rundown establishing endurance with internal recording enabled. DJI quotes up to 11 hours for a transmitter, 10 hours for the receiver and 40 hours with the charging case. That final figure was measured with internal recording and noise cancellation off, in close-range, interference-free conditions. It is a reference point, rather than a guarantee for a full day using every feature.

The Australian DJI store lists the 2 TX + 1 RX + Charging Case kit at A$279. It includes mounting accessories, windscreens, front covers, a 3.5mm TRS camera cable, USB-C phone adapter, charging cable and pouch. Solo options start at A$149, while adding the separate Mobile Receiver to the two-transmitter bundle takes the listed price to A$328. Choose carefully: the A$149 camera-receiver kit and A$149 mobile-receiver-and-case kit are different configurations.

Compared with the Mic Mini 2, the 2S earns attention through internal recording and its expanded connection options. The Mini 2’s quoted case-assisted operating time is longer at up to 48 hours, so the newer model is not an improvement in every column. The Mini 2S also lacks the Mic 3’s timecode capability; its appeal is a simpler creator workflow rather than replacing every production feature above it.

What makes the Mini 2S easy to recommend is the combination of dependable everyday audio, uncomplicated controls and a separate recording at the microphone. The faceplates are fun, but the backup is the reason to care. For interviews, travel and small camera setups, this is a well-judged A$279 package, provided you enable the recording format you want before the take you cannot repeat.