Sound Devices' new 633 mixer/recorder: An audio tool for the digital age

Written by RedShark News Staff

Sound Devices/RedSharkSound Devices 633


A video without sound is not a video. To stop that happening, you probably need something like this

Sound devices. The clue is in the name. There's a clever pun too: they obviously make audio mixers and recorders, but they have a reputation for being "sound" as well: they sound fantastic and they're robust too.

Over the last three years or so, Sound Devices has left us in no doubt about their technical abilities. Their PIX range of external video/audio recorders has shown the world that they have no fear of the digital domain. Programming FPGAs (the programmable processing hardware that powers the recorders) for HD video is no easy task.

So with all the excitement around their video products, this is a clear statement that they haven't slowed down even a bit with their audio products. And this one is clearly a tour-de-force, embracing just about every task and situation an audio engineer might find themselves in when working alongside their video colleagues - or working on their own on a one-man production.

The 633 is a six input mixer with an integrated ten track recorder. It comes with six analogue inputs, three on full size XLRs and three on TA3 (mini-XLR connectors). Each input is assignable to any output bus. There's also AES digital I/O, along with support for AES42 digital microphones (these are mics with A/D conversion built in, that can be controlled and powered remotely).



The recorder stores media on Compact Flash and SD cards - the exact combination including the track allocation is chosen by users.  Audio is 24 bit at 48 kHz. Recording at 96 kHz is to a maximum of 8 tracks, and six tracks of 192 kHz can be stored.

To make recordings as secure and as safe as possible, the recorder/mixer has four power options and Sound Devices "PowerSafe" technology ensures that if one power source is removed, the unit will seamlessly switch to another without affecting the recordings. If all power is lost, the unit has ten seconds to store files and shut down properly.

There's a built-in timecode generator/reader and comprehensive metadata can be stored with the recordings.

Sound Devices reputation is as robust as their kit, and audio recordists who are serious about their art will, we think, love the 633.

 We look forward to testing one of these.

Sound Devices full press release after the break




Reedsburg, wi, NOVEMBER 19, 2013 — Sound Devices, specialists in portable audio and video products for field production, introduces the 633, a six-input mixer with integrated 10-track recorder. It includes Sound Devices’ proprietary PowerSafe technology and a unique four-way power supply for maximum operational runtime. As the next must-have production tool, the 633 has a full complement of I/O designed into a compact, portable device, ideal for over-the-shoulder applications.

The powerful 633 mixer/recorder features six inputs, with three high-bandwidth mic/line XLR inputs complete with phantom power, high-pass filter, input limiter and variable pan. Three additional line-level inputs appear on TA3 (mini-XLR) connectors. All inputs are assignable to any output bus. AES digital I/O, including support for AES42 digital microphones, is available.

The 633 offers 10-track 24-bit, 48 kHz uncompressed polyphonic or monophonic broadcast WAV file recording (96 kHz for eight tracks, 192 kHz for six tracks) or timecode stamped MP3 recording to CompactFlash and/or SD cards. All six inputs plus Left/Right and Aux 1/2, can be recorded to individual tracks. Similar to Sound Devices’ 12-input 664 Production Mixer, the 633 offers dual card slots that record to either one or both cards simultaneously, with the added ability to assign different tracks to each memory card.

Unique to the industry, the 633 is equipped with a four-way power supply and Sound Devices’ proprietary PowerSafe technology. This four-way powering allows for multiple, simultaneous power sources including external DC on a Hirose 4-pin locking (12-18 V), two removable and independent L-type Lithium-ion batteries and internal AA battery powering (six-AA). The unit detects when power sources are removed and seamlessly transitions to an available power source. With its PowerSafe circuitry, when all power is removed the unit remains on for 10 seconds to close all file operations and properly shut down. With PowerSafe, a complete power loss has no effect on the recording. PowerSafe also provides two-second ‘power-on-to-recording’ so the mixer is ready for operation at a moment’s notice.

The 633’s high-accuracy, Ambient-based timecode generator/reader assists in multi-camera and double-system sound applications. All common production timecode rates and modes are available. Extensive file metadata is supported along with the timecode. The 633 also features a keyboard port for quick and easy metadata entry.

Designed for the demands of field production, the 633 has easily accessible, tactile front panel controls. Its LCD-based setup menu offers easy navigation and control of its extensive features. Menu options for metering, display and headphone favorites are among the selections that can be saved to scenes, which save the complete state of the mixer to memory cards in order to quickly reproduce a setup.

The 633 is also available as a complete package, the 633-KIT, which includes the unit plus all of the accessories needed for use in the field. This production-ready kit includes the 633 mixer, the CS-633 Production Case, two L-type Lithium-ion batteries, one SD and one CF card, plus TA3-to-XLR cables.

The 633, like all Sound Devices products, is designed to withstand the physical and environmental extremes of the field. Its top and bottom chassis panels are made from molded, metalized carbon fiber for superior durability and weight reduction. The chassis panels are also gasketed for water resistance.

Sound Devices, LLC designs and manufactures portable audio mixers, digital audio recorders, and digital video recorders and related equipment for feature film, episodic television, documentary, news-gathering, and acoustical test and measurement applications. Founded in 1998, the company designs and manufactures from their Reedsburg, Wisconsin headquarters with additional offices in Madison, WI and Highland Park, IL. For more information, visit the Sound Devices website,



Tags: Audio


Related Articles

21 July, 2020

Alan Turing invented computer music

Similar to unearthing a time capsule, a recently re-discovered recording by Alan Turing reveals his pioneering efforts in the field of computer music.

Read Story

20 July, 2020

How to reduce embedded wind noise in your audio

Wind noise is the bane of audio recording. Here are some tips on how to reduce it using the tools already in your NLE.                              ...

Read Story

10 July, 2020

VCA Faders: One simple thing that can make your audio mixing much easier

Replay: If you often end up with layer upon layer of audio, how do you make easy sense of it when it comes to mixing? Tim Dunphy takes us through the...

Read Story