Four 32-bit float wireless mic kits compared for camera video

Quick answer: If you shoot on a Sony camera with a digital Multi Interface (MI) Shoe, the Sony ECM-W5 is the kit built for you, because it sends 32-bit float audio straight into the video file. Everyone else is better served by the DJI Mic 3 or the Rode Wireless PRO, and the Hollyland Lark Max 2 is the cheaper route to similar features. Prices below are launch figures, so check current prices before you buy.

What the specifications mean in practice

All four kits in this guide record 32-bit float, which keeps both whispers and shouts inside the file so you can pull levels up or down later. Where that recording happens matters more than the label. Videomaker notes that the Rode Wireless PRO does 32-bit float only on the transmitter’s internal memory, so audio sent to a camera or phone doesn’t get that bit depth.

The Sony takes a different route. According to CineD’s launch report, the receiver passes 32-bit float digitally through the MI Shoe to a compatible camera, which writes it into the same file as the picture. CineD adds that which cameras support 32-bit float recording is still open. One reviewer, whoismatt.com, names the Sony a7 V and a7R VI as models that can record it internally.

There’s a caveat from Sony’s own audio manager. In the CineD Focus Check interview, Markus Warlich says no 32-bit converter exists, so a true 32-bit float recorder stacks two 24-bit converters. He also says it can’t repair a clipping capsule or analogue input stage, clothing rustle or cable noise. Float protects you from gain mistakes, and a badly placed lav still sounds like a badly placed lav.

Backup storage is the second number worth reading. Each transmitter records its own copy, so a dropout on the radio link doesn’t lose the take. More gigabytes means you can leave the recorder running through a full day without offloading.

Range figures are line-of-sight claims from the makers and shrink fast in crowds, indoors and around bodies. Battery numbers are also manufacturer claims, usually with noise cancellation off. Weight matters because the transmitter hangs from a shirt collar, and a heavy one drags thin fabric.

The four kits

Sony ECM-W5

Sony announced the ECM-W5 on 14 October 2026, and Sony’s release gives a US MSRP of US$399.99 for the kit, with availability from November 2026. LensVid reports estimated US delivery on 19 to 20 November, so as of 1 November 2026 this one is a pre-order.

The kit has two transmitters, one receiver and a charging case. CineD lists up to 64 GB per transmitter, good for 90 hours at 32-bit float/48 kHz or 60 hours at 24-bit/96 kHz. Sony quotes up to 500 m line of sight, and each transmitter has a 3.5 mm input for a lavalier such as the optional ECM-L1.

Adding two more ECM-W5T transmitters gets you four channels, Engadget notes, at US$119.99 each. A B&H listing says a USB-C adapter in the box lets the receiver feed phones and PCs that support USB Audio Class 2.0. Sony quotes up to 11 hours of battery; B&H words it as 11 hours with the charging case, so check whether that’s per charge.

Engadget is blunt about value: against the DJI Mic 3 or DJI Mic Mini, the Sony is hard to justify unless you want it specifically for Sony cameras.

DJI Mic 3

DJI launched the Mic 3 on 28 August 2025. Digital Camera World gives £259 at launch for the two-transmitter kit with case, while Newsshooter lists US$329 for the two-person kit at the time. Engadget’s October 2026 comparison cites US$259, so US prices have moved; check the current one.

It’s the lightest system here. B&H lists 16 g per transmitter and 25.1 g for the receiver, with 8 hours on the transmitter, 10 on the receiver and up to 28 hours with the case. DJI uses dual-band hopping across 2.4 and 5.8 GHz, and Digital Camera World puts range at 400 m.

Internal storage is 57 hours at 24-bit or 43 hours at 32-bit float, per Digital Camera World, halved if you record dual files. Newsshooter adds that the receiver can output four tracks with select Sony cameras in quadraphonic mode.

Rode Wireless PRO

Rode’s kit is the oldest of the four, launched in 2023 at US$399 according to Newsshooter. The same report gives a range of over 260 m, the shortest here, and a kit with a charging case, two lavaliers and mounting clips.

Each transmitter weighs 35 g, per PRONEWS, which also lists a 177 g case. Newsshooter’s review puts battery life at seven hours. CineD says the 32 GB of memory per transmitter holds about 40 hours.

Rode’s GainAssist automatically manages levels when you record into a camera. That’s useful because, as noted above, the camera path isn’t 32-bit float.

Hollyland Lark Max 2

Hollyland’s kit was announced in May 2025. Newsshooter lists the two-transmitter Combo at US$249 and the four-transmitter version at US$319. That makes it the lowest launch price in this guide.

It’s also the lightest on the shirt: Digital Camera World lists 14 g per transmitter and 24 g for the camera receiver. CineD’s launch table says 28 g, which disagrees, so I’ve used the figure two outlets agree on.

Hollyland states at least 11 hours per transmitter with noise cancellation off, 36 hours with the case, and 340 m range on its product page. Storage is the trade-off. The Gadgeteer lists 8 GB per transmitter, which is 14 hours of 24-bit or 10 hours of 32-bit float.

Fstoppers says it can also send 32-bit float through the receiver to a compatible recorder. On Sony’s MI Shoe, though, CineD’s launch table shows 24-bit/48 kHz.

Side-by-side specifications

Kit	Launch price (kit)	Transmitter weight (g)	Range (m)	Transmitter battery (h)	32-bit float backup (h)
Sony ECM-W5	US$399.99 (Oct 2026)	27.1	500	11 (see note above)	90
DJI Mic 3	£259 UK / US$329 reported (Aug 2025)	16	400	8	43
Rode Wireless PRO	US$399 (2023)	35	260+	7	40
Hollyland Lark Max 2	US$249 (May 2025)	14	340	11	10

All figures are manufacturer claims as of 1 November 2026. Rode’s backup figure is “about 40 hours” from CineD. The Hollyland price is for the two-transmitter Combo.

The chart below shows the figure that separates these kits most: hours of 32-bit float you can store per transmitter. Sony’s 90 hours is more than double DJI’s 43 and Rode’s roughly 40, and Hollyland’s 10 hours is the one to watch if you shoot long events without offloading.

32-bit float backup recording per transmitter. Hours of 32-bit float: Sony ECM-W5 90, DJI Mic 3 43, Rode Wireless PRO 40, Hollyland Lark Max 2 10 (hours) — 32-bit float backup recording per transmitter
Source: Manufacturer figures via CineD, Digital Camera World, The Gadgeteer; Rode's is approximate (about 40 h)

Weight spans 14 g to 35 g per transmitter, a 21 g gap you will notice on a silk blouse more than on a jacket lapel.

Transmitter weight. Weight per transmitter: Sony ECM-W5 27.1, DJI Mic 3 16, Rode Wireless PRO 35, Hollyland Lark Max 2 14 (grams) — Transmitter weight
Source: Sony UK, B&H Photo, PRONEWS, Digital Camera World

Our calculation: launch price per hour of backup

Our calculation, using US launch prices and each maker’s 32-bit float storage figure (different launch years, so treat it as a rough guide):

Sony ECM-W5: US$399.99 ÷ 90 h = about US$4.44 per hour
DJI Mic 3: US$329 ÷ 43 h = about US$7.65 per hour (using Newsshooter’s launch figure)
Rode Wireless PRO: US$399 ÷ 40 h = about US$9.98 per hour
Hollyland Lark Max 2: US$249 ÷ 10 h = US$24.90 per hour

This is a storage-only measure. It ignores range, weight, camera integration and street prices, which differ from launch prices.

Best for: picks by use and budget

Best for Sony camera owners who want one file: the ECM-W5. The MI Shoe connection, timecode, four-channel expansion and 64 GB per transmitter are aimed at that workflow. It needs a compatible camera to get the 32-bit float in-file benefit.

Best for mixed gear and the lightest kit: the DJI Mic 3. With 16 g transmitters, dual-band 2.4 and 5.8 GHz and 43 hours of 32-bit float backup, it covers cameras, phones and DJI’s own Osmo devices. It also supports up to four transmitters and eight receivers, per Newsshooter.

Best for automatic level safety when recording straight to camera: the Rode Wireless PRO. GainAssist handles the camera feed, and the transmitters carry the 32-bit float safety copy. It’s the heaviest and shortest-ranged here, and its price is the same as Sony’s at launch.

Best for a tight budget: the Hollyland Lark Max 2. At US$249 at launch it’s the cheapest of the four, with the smallest memory. For events under about 10 hours of 32-bit float, that is enough.

What this means for you

Start with your camera. If it has the digital MI Shoe and records 32-bit float natively, the ECM-W5 saves the sync step in post, and you should confirm your exact model against Sony’s compatibility list before ordering. If it doesn’t, the Sony’s main advantage is gone and you’re paying US$399.99 for a kit that DJI and Hollyland match on many features.

Next, decide how far you will be from the talent. Under 100 m in a quiet room, all four have more range than you need. In crowded venues, every 2.4 GHz kit is sharing spectrum, which is the theme of the Warlich interview; if you work in busy radio environments regularly, read that discussion before spending.

Finally, price the extras. A kit with a case, windscreens and a lavalier, like the Rode, saves buying them separately, while Sony’s extra transmitters are US$119.99 each. Launch prices in this article are only a starting point, and as of 1 November 2026 current shop prices for the older kits differ from them, so compare current prices from several retailers.

Sources

Header image: illustration, AI-generated.