New 6-Series Firmware Adds Coveted Automixing Technology To 633 And Sennheiser Support with 688/SL-6


Free firmware update offers both Dugan automixing and Sound Devices MixAssist for the 633 mixer/recorder; Further enhancements available for entire 6-Series line

Last Updated: February 22, 2017 9:08 pm GMT
(Reedsburg, WI--February 22, 2017) Sound Devices, LLC announces that its popular 633 mixer/recorder now offers two powerful, high-performing automatic mixing options, Dugan automixing and Sound Devices MixAssist™. The two well-regarded automixing algorithms are available at no additional cost to 633 owners with the release of Firmware Version 4.50. With this firmware update, the 688 mixer/recorder with its SL-6 powering and wireless system accessory now supports SuperSlot™ integration with Sennheiser EK-6042 wireless, two-channel slot-in receivers. Sound Devices added Dugan’s well-known automatic mic mixing to its 688 mixer/recorder in 2016, making it the first field mixer to incorporate the technology.

The inclusion of the Dugan Speech System™and MixAssist to the compact 633 mixer makes it the go-to tool for more portable production applications. The new feature provides automixing for up to six audio channels. “ Sound Devices is proud to offer two industry-leading automixing algorithms to 633 owners. On a given day, users now have the choice on which automixing tool best suits their needs,” says Matt Anderson, CEO of Sound Devices, LLC. “ Adding both automixing options brings an already-impressive product to another level. We encourage users to experiment with both to hear the subtle differences between the two algorithms and to help them produce the best audio possible.”

Getting a great production mix can be challenging in many field applications. Unscripted dialog, multiple characters, and wide-and-tight multi-camera coverage often require the use of wireless lavalier mics and multi-track recording. In these situations, auto mixers improve intelligibility, reduce noise and reverberation, and maintain consistent overall gain as microphones are turned on and off.

Dugan automixing is widely used in broadcast television applications, in dialogue recording for TV and motion picture production, and in house of worship (HOW) applications. It also is a good choice for teleconferencing, video trucks, and theater applications with multiple wireless microphones on stage. Dugan automixing takes over the nerve-wracking job of cueing mics in and out, freeing up the location recordist to pay more attention to the actual mix balance. Mixes are cleaner and this post-production time is reduced.

MixAssist automatically attenuates the level of inputs that are not active and helps maintain consistent background sound levels regardless of the number of open microphones. Comb filtering and phasing artifacts are also reduced when multiple mics pick up the same sound source by intelligently attenuating redundant mics. The end user can define the amount of off-attenuation MixAssist uses. MixAssist can be used for mixing many speech-specific applications, including reality TV productions, broadcast TV programs, wireless multi-mic dialogue recording for TV and motion picture production, sound applications for various corporate needs, HOW capture, and more.

For the 688, the v4.50 update also adds support for Sennheiser EK-6042 two-channel receivers when slotted-into the Sound Devices SL-6 powering and wireless accessory, which uses Sound Devices’ SuperSlot™ technology. SuperSlot is the industry’s first non-proprietary, open wireless control and interfacing standard, developed by Sound Devices in collaboration with a number of leading wireless manufacturers - Lectrosonics, Wisycom, Sennheiser, and Audio Limited. “ The 688 mixer/recorder with SL-6 accessory provides a new breed of wireless control, powering, and interfacing with multiple wireless receivers. We’re excited that we can now offer this technology to users of the Sennheiser EK-6042,” said Anderson. Sound Devices is committed to the continual improvement of existing feature sets. The firmware v4.50 update offers several feature enhancements for the Sound Devices 688, 664 and 633 mixer/recorders.

Click the following links to download Firmware v4.50:
The 633 features three high-bandwidth mic/line inputs on XLR inputs, each complete with phantom power, high-pass filter, analog input limiter and variable pan, plus three additional line-level TA3 inputs for added flexibility in complex productions. All inputs are assignable, pre- or post-fade, to six-output buses: left/right plus Aux 1-4.

For recording, the 633 offers 10-track, 24-bit, 48 kHz uncompressed WAV recording to SD and CompactFlash memory cards. All common sampling rates are supported, including 192 kHz on up to six tracks. The 633 features comprehensive metadata editing, sound report creation, an Ambient™ timecode generator and reader, a two-second, power-on-to-record ability called QuickBoot™, and PowerSafe™, a built-in, 10-second power reserve to protect against data loss from inadvertent power loss.

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About Sound Devices
Founded in 1998, Sound Devices, LLC, designs both Sound Devices audio products and Video Devices video products. Sound Devices offers portable audio mixers, digital audio recorders and related equipment for feature film, episodic television, documentary, news gathering, live-event, and acoustical test and measurement applications. Video Devices offers digital video monitors, recorders and related products that address a range of video productions, including fast-paced studio applications, live sports, and events, as well as mobile, TV, film, and documentary productions.
(more)The Sound Devices, LLC, headquarters is located in Reedsburg, Wisconsin. Additional offices are located in Madison, Wisconsin and Chicago. For more information, visit the Sound Devices and/or Video Devices websites: and


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