SmallRig S70 Wireless Microphone System Announced – 2.4 GHz, 48kHz/24-bit Audio, Grammy-Tuned EQ Presets

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by Nino Leitner5 days ago

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SmallRig has unveiled the S70, a compact 2.4 GHz wireless microphone system designed for content creators, vloggers, and filmmakers who need professional two-person audio capture across smartphones, tablets, and cameras. The system features 48kHz/24-bit recording via an ATS3031 chip, nine EQ presets calibrated by Grammy-winning sound engineer Luca Bignardi, and up to 40 hours of total battery life with the included charging case.

The wireless microphone market has become increasingly crowded in recent years, with systems from RØDE, DJI, and Hollyland competing for the attention of mobile content creators. SmallRig, primarily known for its camera rigging accessories, is now making a serious push into audio with the S70 system. The company has clearly studied the competition and arrived at a feature set that checks most boxes for run-and-gun production while undercutting many rivals on price.

Compact transmitters with logo-free design

One of the S70’s standout features is the remarkably small form factor of its clip-on transmitters. Each unit measures just 1.1 x 0.3 inches with an 8.8mm microphone head, weighing only 8.6 grams. SmallRig has deliberately omitted visible branding from the transmitter body, which should appeal to any filmmaker or creator who want their audio equipment to disappear on camera during interviews and vlogs.

The transmitters feature built-in omnidirectional microphones and communicate with receivers via 2.4 GHz digital wireless technology. SmallRig rates the maximum operating range at 984 feet (300 meters) in optimal conditions, though real-world performance will likely vary depending on environmental interference. Each transmitter includes a mute switch for quick audio control during recording.

Audio specifications and processing

Under the hood, the S70 system utilizes an ATS3031 chip to deliver 48kHz/24-bit audio capture. SmallRig specifies a 70 dB signal-to-noise ratio and maximum sound pressure level of 120 dB, which should handle most vocal recording scenarios without distortion. The system includes an automatic limiter to prevent clipping during sudden volume spikes, a useful safeguard for unpredictable shooting environments.

Perhaps the most distinctive feature is the inclusion of nine professional EQ presets, which SmallRig claims were tuned by Grammy Award-winning sound engineer Luca Bignardi. These presets include General, Rich, Bright, Male, Female, Singing, Guitar, Violin, and Ambient modes, allowing users to optimize their sound profile without post-production adjustments. Whether these presets genuinely improve audio quality or simply provide convenient starting points remains to be tested in real-world conditions.

Noise reduction and mixing modes

The S70 offers three levels of noise reduction to help manage ambient sound in various shooting environments. Combined with five-level gain adjustment when connected to cameras (or three-level gain for mobile devices), users have reasonable control over their input levels without diving into complex menus.

Recording flexibility comes through three mixing modes: Mono, Stereo, and Safety Track. The Safety Track mode is particularly useful for solo operators who want a backup recording at reduced levels as insurance against unexpected peaks. One-tap switching between modes should make it straightforward to adapt to different production scenarios on the fly.

Receiver options and connectivity

SmallRig is offering the S70 system in multiple configurations to accommodate different workflows. The flagship S 70-A kit includes three receivers: a USB-C plug-in for Android devices and newer iPads, a Lightning plug-in for iPhones, and a camera-mount receiver with 3.5mm TRS output. Both mobile plug-in receivers support simultaneous device charging via pass-through, addressing a common pain point with similar systems.

The camera-mount receiver offers shoe-mounting capability for attaching directly to DSLR and mirrorless camera hot shoes. It outputs unbalanced audio via the 3.5mm TRS connection, which is standard for consumer and prosumer camera inputs. The system operates as USB Class Compliant, eliminating the need for additional drivers on most devices. A companion mobile app for Android and iOS provides additional control options.

Battery life and charging case

SmallRig rates each transmitter for up to 8 hours of continuous use on a single charge. The included charging case extends total system runtime to over 40 hours by recharging the transmitters between takes. For all-day shooting scenarios, this should provide adequate power without needing to hunt for wall outlets.

The S 70-A kit includes furry windscreens for outdoor use, a USB-C charging cable, a 3.5mm TRS audio adapter cable, and a carrying bag. SmallRig backs the system with a limited 2-year manufacturer warranty.

Pricing and availability

The SmallRig S70 wireless microphone system is available in Black and White color options. The full S 70-A kit with all three receivers is priced at $89.99, while a USB-C only configuration (S70-C2) comes in at $69.99. U.S. orders are expected to begin shipping on January 12, with other regions following on January 15. The system is currently available for preorder through SmallRig’s website and authorized dealers including B&H Photo.

At $89.99 for a complete two-person wireless system with multiple receiver options, the SmallRig S70 represents aggressive pricing in a competitive market segment. Will the Grammy-tuned EQ presets and compact design be enough to sway content creators away from established competitors? Don’t hesitate to let us know in the comments below!