Sound Devices 688 Mixer/Recorder & SL-6 System & More - Like New! - $5000 O.B.O


Los Angeles, California


Audio / Sound Equipment for sale

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Original owner, fantastic functional and cosmetic condition.

Also including a Sound Devices Wingman USB transceiver with adapters, and 3x CF media cards. Offering for $5000, which includes expedited shipping to anywhere in the continental US. I'm also open to negotiate your best offer. Available for local pickup or delivery in the greater Los Angeles area.

These were kept in a safe, climate-controlled environment. All items were fully tested, and serviced with the latest firmware.

The 688 is a 12-channel, 16-track portable audio powerhouse that incorporates multi-channel mixer, auto-mixer, recorder. Combined with the SL-6, you have a solid production sound platform on a sound cart or in the bag.

The SL-6 is a vital companion to the 688, simplifying interconnection between the 688 and up to 6 channels of wireless receiver audio by accepting three dual-channel SuperSlot-compatible receivers (i.e. Lectrosonics, Audio Limited, Sennheiser, Wisycom), giving operators a range of controls directly from the 688. **Note: Compatible wireless audio receivers and SuperSlot hardware required; not included with this listing**


Manufacturers description below:

Inputs and Outputs

The 688 has six high-bandwidth mic/line inputs on XLR connectors, each complete with phantom power, high-pass filter, analog input limiter and variable pan. Six additional line-level inputs on TA3 connectors offer flexibility for more complex productions.

Routing Flexibility

All inputs are assignable, pre- or post-fade to its eight output buses, left/right plus Aux 1-6. The 688 can send its main left/right mix to three cameras simultaneously via transformer-balanced XLR and Hirose outputs.


The Sound Devices 688’s powerful digital processing engine delivers 12-channel auto-mixing capability using the most sophisticated algorithm on the market today. 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 Sound Devices 688 offers 16-track, polyphonic or monophonic broadcast WAV file recording to SD and CompactFlash cards. All common sampling rates are supported, including 192 kHz on up to six tracks. The memory cards can be set independently, recording either identical material for real-time backup, or combinations of WAV and MP3 files.


The Sound Devices 688 incorporates exclusive PowerSafe circuitry with smart sensing of available power sources, front panel warning indication of power loss, and an integrated 10-second power reserve that will, in the event of an inadvertent power loss, allow the 688 to safely stop recording, properly end all file operations, and then automatically shut down.


Power on and start recording in less than two seconds. You never have to wait on sound.

Timecode and Metadata

The Sound Devices 688 features a world renowned Ambient™ timecode generator and reader suppor ting all common rates and modes. A helpful time code compare utility shows the difference between internal and external timecode. The 688 also generates sound reports and supports extensive metadata, via the front panel or attached USB keyboards.

Sound Devices SL-6

Accepts three dual-channel slot-in wireless receivers for a total of six channels
Compatible with existing slot-in and new SuperSlot wireless receivers
Set SuperSlot-compatible receiver frequency and power on/off from the 688
Monitor SuperSlot-compatible receiver audio, RF, and transmitter battery levels from the 688
Accepts analog or digital audio depending on wireless receiver. No need for cables.
Built-in antenna signal distribution
NP-1 battery slot for powering 688, receivers and external peripherals
USB charging port
Two 12V isolated outputs
Two non-isolated direct battery outputs
PowerSafe 10-second power reserve
Easy to attach to the 688

Local, safe meeting in the Los Angeles area preferred. If applicable, buyer is responsible for all insured shipping fees. No returns/exchanges offered. Seller offers no warranties for these items. All sales are final.

Items and packaging will be properly sanitized before shipment, to the best of the seller's knowledge and ability. Seller makes no guarantees once the package is handed over to buyer, or given to a courier for shipping & delivery.

For any questions, please send me a message. Thank you!