Sound Devices MixPre-3 II 3-Channel / 5-Track Multitrack 32-Bit Field Recorder

Overview

The Sound Devices MixPre-3 II 3-Channel / 5-Track Multitrack 32-Bit Field Recorder is a compact professional recorder designed for independent filmmaking, field recording, podcasting, and mobile production. It can record up to three external input channels plus a stereo mix for a total of five tracks, with support for resolutions up to 32-bit float / 192 kHz for exceptionally flexible, high-quality location audio capture.

Built for users who need strong preamp performance, dependable sync tools, and flexible powering in a small footprint, the MixPre-3 II combines Sound Devices Kashmir mic preamps, internal timecode generation, USB interface functionality, SD card recording, USB backup, and Bluetooth control. Whether used as a lightweight bag recorder, a compact mixer for camera-based work, or a desktop interface for studio and voice applications, it delivers a highly adaptable solution for intimate productions and demanding field workflows.

Core Features

• The MixPre-3 II records up to three input channels plus a stereo mix, providing 5-track recording for compact production workflows.
• It supports recording up to 32-bit float / 192 kHz, helping preserve wide dynamic range and reducing the risk of clipped recordings in fast-moving situations.
• Three high-gain, low-noise Kashmir mic preamps deliver professional-grade audio capture with fully RF-filtered inputs.
• A built-in internal timecode generator supports accurate sync workflows for audio-for-video applications.
• The recorder can also function as a 5-input / 2-output USB audio interface for Mac and Windows computers.
• USB streaming supports up to 32-bit float audio on compatible Mac systems and sample rates up to 96 kHz for interface use.
• Adjustable analog limiters, polarity inversion, panning, delay, and low-cut filtering allow the recorder to be tailored to different recording scenarios.
• Recordings can be captured to SD cards and automatically copied to USB thumb drives for backup and transfer convenience.
• Power options include AA batteries, USB bus power, AC power, and optional Sony L-series battery support for flexible field operation.
• Built-in Bluetooth support enables wireless control through the Sound Devices Wingman app on iOS and Android devices.

32-Bit Float Recording for Demanding Environments

One of the MixPre-3 II's major upgrades is its ability to record in 32-bit floating point directly to an internal SD card. This gives filmmakers, sound mixers, and recordists extra security when capturing unpredictable sound sources, especially in documentary, interview, and live-event situations where levels can change suddenly and reshoots are not always possible.

Professional Kashmir Preamps

Like the original MixPre series, this model uses class-A Kashmir microphone preamps for detailed, low-noise capture. With up to 76 dB of gain on mic inputs and support for 48 V phantom power, it is well suited to professional microphones used in production sound, dialogue capture, voice work, and ambient field recording.

Built-In Mixing and Monitoring

The recorder includes an integrated 3x2 portable mixer, allowing users to create and monitor a stereo mix while also recording isolated tracks. Headphone monitoring is available through a dedicated 3.5 mm output, and the high-fidelity headphone amplifier helps make the unit practical for critical listening in the field.

USB Audio Interface and USB Input Flexibility

When connected to a computer, the MixPre-3 II can operate as a USB audio interface for recording software on Mac and Windows systems. It can stream audio at up to 96 kHz and, on supported Mac systems, can send a complete 32-bit float audio signal over USB. It also supports up to two tracks of USB audio input, which can be useful for recording stereo backing tracks or external audio feeds into the recorder.

Timecode and Production Sync Tools

For video-oriented workflows, the MixPre-3 II features a built-in timecode generator and dedicated timecode input and output connections via 3.5 mm SMPTE ports, with Micro-HDMI timecode input also supported. This makes the recorder easier to integrate into multi-device production setups where accurate sync is essential.

Customizable Recording Controls

The MixPre-3 II offers adjustable analog limiters and useful recording tools such as low-cut filtering, polarity inversion, panning control, and delay. These features help users optimize recordings for speech, dialogue, field ambience, and camera-linked production work without needing a larger external mixer.

Backup, Control, and Workflow Enhancements

Beyond SD card recording, the recorder can auto-copy files to USB thumb drives, helping streamline backup and handoff tasks in the field. Bluetooth control through the Wingman app adds convenient wireless transport and monitoring control, including access to high-resolution meters and current timecode information.

Expandable with Optional Plug-Ins

The MixPre-3 II can be customized with optional plug-ins to extend its capabilities. Support for NoiseAssist can help reduce background noise on location, while the optional +2 channel plug-in can expand the unit into a 5-channel / 7-track recorder using Aux or USB-C sources for the additional channels.

Portable Design for Bag, Camera, or Tripod Use

Rugged, lightweight, and compact, the MixPre-3 II is designed for true mobile use. It can be carried in a sound bag or mounted to a tripod or camera setup, making it a strong fit for documentary crews, solo creators, small interview setups, and lightweight production rigs.