Fully routable and ultra-portable the Sound Devices 833 Portable Compact Mixer-Recorder is the professional’s tool for mobile and small productions. Like the popular Sound Devices 633, the 833 is small, lightweight, and compact. A tactile interface with dedicated faders, trim knobs, and PFL switches makes this mixer-recorder ideal for run-and-gun bag use.

The 833 has 6 mic/line preamplifiers, 8 channels, 12 tracks, 6 analog outputs, and ultra-accurate timecode. Many features have carried over from the premium Sound Devices’ Scorpio, such as Sound Devices’ new preamplifier design, 2 SD card slots, dual L-Mount battery charging and powering, and an internal 256 GB SSD.

833 is fully routable, and any physical input can be routed to any track. The 833 features both digital and analog inputs and outputs, and has multiple powering options, so it will fit effortlessly into your existing kit.

A built-in three band EQ may be set to either pre- or post-fade for each channel to tackle any problems directly on-set. Enable Dugan Automixing or MixAssist to automatically attenuate unused microphones in multi-microphone applications. Up to 8 channels can be automixed at a time.

Dedicated coms and slate allows for professional bi-directional communication with other crew members. Send customized mixes to the camera or crew with multiple mix buses. With the ability to record to three media simultaneously, you can turn over SD cards to production at the end of the day while keeping a backup on the internal 256 GB SSD. Elevate your kit with the 833 Portable Compact Mixer-Recorder.

Sound Devices 833 Features

6 ultra low-noise, 8-Series microphone preamplifiers
8 channels, 6 buses, 12 tracks
6 analog outputs
Ultra-accurate timecode
256 GB internal SSD, 2 SD card slots
USB-A and C ports for SD-Remote app, linear fader control via MCU, keyboard, and file transfer
Dugan Automixing/MixAssist for up to 8 channels

833 Portable Compact Mixer-Recorder1
XL-WPTA4 power supply1
XL-ANT2.4 Bluetooth antenna1
XL-LCD-PROTECT clear LCD cover1

Analog Inputs
- Frequency Response: 10Hz to 80kHz ± 0.5dB (192kHz sample rate, re 1kHz)
- THD + Noise: 0.005% max (mic in, 1kHz, 22Hz–22kHz BW, trim at 20, fader at 0, -10dBu in)
- Equivalent Input Noise: -131dBV (-129dBu) max (mic in, A-weighting, 76 dB gain, 150 ohm source impedance)
Processing Engine
- Highly extensible, full FPGA-based audio processing, 3 FPGAs
- Six-way ARM multiprocessor system
- 64-bit audio processing precision
Inputs
- Mic/Line inputs: 6 total, all fully featured; 3 on full-size XLR, 3 on TA3
- Inputs
  - Mic-level inputs: (XLR, TA3): Class-A, discrete differential long-tail pair, 4k ohm input impedance
  - Line-level inputs: (XLR, TA3,): active-balanced, 4k ohm input impedance
  - 48V phantom: full 10 mA to all 6 inputs simultaneously
  - 8 Total analog inputs: 6 mic-line inputs, 2 on returns
  - AES3 or AES42 available on XLR input 1
  - AES42: +10 V, 250 mA available, mode-1, auto-ASRC
  - USB Audio: 2 Inputs
  - Aux (3.5 mm: unbalanced 2-channel, 4k ohm input impedance
  - Com Rtn (TA3, 3.5 mm) balanced, 1-channel, 8k ohm input impedance
  - External Slate Mic (TA5): balanced, 8k ohm input impedance, menu-selectable 12 V phantom
- Maximum Input Level
- - Mic: +8 dBu (2.0 Vrms)
  - Line: +28 dBu (19.5 Vrms)
  - Aux: +18 dBu (6.2 Vrms)
  - Com Rtn: +24 dBu (12.3 Vrms)
  - External Slate Mic: +12 dBu (3.2 Vrms)
Buses
- 6 Buses (L, R, 1-4)
- Left and Right Mix Bus receives post-fade isolated channels. Optional NoiseAssist plugin instances can be applied to any bus. Buses 1-4 can receive pre-fade, post-fade, or independent send level from isolated channels, Return, and Com Return.
High-Pass FiltersAdjustable 10 Hz to 320 Hz, 18 dB/oct. 1st stage analog (before preamp), 2nd stage digital.
Limiters
- Limiters available at all channels, buses, headphones, for all sample rates
- Analog first stage, all subsequent stages digital
- Attack time: adjustable 1 to 200 ms
- Release time: adjustable, 50 ms to 1000 ms
- Threshold: adjustable, -2 dBFS to -12 dBFS
- Selectable ratio: inf:1, 20:1, 18:1, 16:1, 14:1, 12:1, 10:1
- Knee: soft, hard
Compressors
- Compressors available at all channels (pre or post-fade) and buses for all sample rates
- Attack time: adjustable, 1 to 200 ms
- Release time: adjustable, 50 ms to 1000 ms
- Threshold: adjustable, 0 dBFS to -40 dBFS
- Selectable ratio: adjustable, 1:1 to 20:1
- Knee: soft, hard
Delay
- Channel Adjustable 0-50 ms
- Output Adjustable 0-500 ms
Maximum Gain
- Trim stage (mic input): 76 dB
- Trim stage (line input): 50 dB
- Fader stage: 16 dB
- Bus stage: 16 dB
- Headphone stage: 20 dB
- Mic-to-Line: 108 dB
- Mic-to-Headphone: 112 dB
- TA5 (along with mic input pins) for single connection to headset + mic High output, 4 ohm output impedance, 400 mW + 400 mW at each connector, all individually driven Compatible with headphones of any impedance
Outputs
- XLR (L, R) active-balanced, 250/3.2k/120 ohms (mic/-10/line)
- TA3 (X1/X2) active-balanced, 250/3.2k/120 ohms (mic/-10/line)
- 3.5 mm (X3/X4): unbalanced, stereo, 1.8k ohms
- Maximum Output Level (all into 10k load)
- Digital Outputs: AES3 transformer-balanced, in pairs; 1-2 (XLR-L), 3-4 (XLR-R), 110 ohm, 2 V p-p, AES and S/PDIF compatible
Headphone Outputs
- ¼”, 3.5 mm
- TA5 (along with mic input pins) for single connection to headset + mic
- High output, 4 ohm output impedance, 400 mW + 400 mW at each connector, all individually driven
- Compatible with headphones of any impedance
Recording
- A/D converters |32-bit, 120 dB, A-weighted dynamic range typical
- A/D converters |Sampling rates 44.1 kHz, 47.952 kHz, 48 kHz, 48.048 kHz, 88.2 kHz, 96 kHz, 192 kHz
- Bit Depth: 16, 24
- Recording
  - Internal 256 GB SSD; two removable SD Cards, 10% over-provisioned for optimum performance
  - Simultaneous recording to internal SSD and the two SD cards
  - exFAT formatting
  - 12 tracks (8 iso channels, 4 buses)
  - Broadcast WAV monophonic and polyphonic file format
  - 64-bit WAV (RF64) monophonic and polyphonic; support for files > 4G
  - AAC 2 track at 48 kHz, selectable bit rate 32, 64, 128, 192, 256 kbps
Automatic Mixing
Noise Suppression
- Via optional paid Sound Devices NoiseAssist or CEDAR sdnx Plugins
- Two, four, or eight instances of Noise Suppression can run on any combination of isolated channels (excluding 17-32 on Scorpio), or buses
- Attenuation range: 0-20 dB
- NoiseAssist operates with sampling rates of 44.1 kHz to 48.048 kHz
- CEDAR sdnx operates with sampling rates of 44.1 kHz to 96 kHz
- NoiseAssist audio path latency: 0.77 ms @ 48kHz
- CEDAR sdnx audio path latency: 0.27 ms @ 48kHz, 0.14ms @ 96kHz
USB
- USB-C (USB 3.1 type 1) for file transfer of internal SSD, both SD Cards.
- USB-C 2-in/2-out USB audio interface
- HUSB-A host for keyboard, external controller, external USB hubs supported for connecting multiple devices.
Timecode and Sync
- Modes Supported: Off, Rec Run, Free Run, 24h Run, External, including External Auto-
- Record and Continuous modes.
- Frame Rates: 23.98*, 24, 25, 29.97 DF, 29.97 ND, 30 DF, 30 ND
- Sample/Timecode Accuracy: 0.1 ppm (0.25 frames per 24 hours)
- Timecode Input: 20k ohm impedance, 0.3 V – 3.0 V p-p (–17 dBu – +3 dBu)
- Timecode Output: 75 ohm impedance, 5 V p-p (+7 dBu)
- Word Clock Input: 10k/75 ohm selectable impedance, 1-5 V p-p input sensitivity
- Word Clock Output: 75 ohm impedance, 5 V p-p output, at SR
Remote Control
- Sound Devices CL-12 Linear Fader Controller
- USB MIDI MCU Control – supported 3rd party fader controllers
- SD-Remote Android Tablet app via USB or Bluetooth LE
- SD-Remote Android Phone app via Bluetooth LE
- SD-Remote iPad and iPhone app via Bluetooth LE
- USB Keyboard
- External Timecode Record Trigger
File Delivery to CloudCompatible with Viviana Cloud
LCD
- 320×240, Transflective, excellent sunlight visibility
- Larger touchscreen display available via USB-connected SD-Remote app
Power
- External: 10-18 V input on locking TA4 connector, (pin 4 positive, pin 1 ground), supports
- Smart Battery telemetry
- Dual rear-mount Sony-style L-mount batteries with chargers
- Current Draw, at 12 V no battery charging
- Intelligent power-down of unused mic preamps and other internal circuits
Environmental
- Operating: -20° C to 60° C, 0 to 90% relative humidity (non-condensing)
- Storage: -40° C to 85° C
Dimensions (HxWxD)2x8.7x6.6 inches (5.1x22x17 cm)
Weight
- 2.75 lbs (unpackaged, without batteries)
- 1.25 kg (unpackaged, without batteries)