Sound Devices 833 Portable Compact Mixer-Recorder

Analog Inputs

• Frequency Response - 10 Hz to 80 kHz ± 0.5 dB (192 kHz sample rate, re 1 kHz)
• THD + Noise - 0.005% max (mic in, 1 kHz, 22 Hz–22 kHz BW, trim at 20, fader at 0, -10 dBu in)
• Equivalent Input Noise-131 dBV (-129 dBu) 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
  • 48 V 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) 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)
  • Rtn A, B: +18 dBu (6.2 Vrms)
  • Com Rtn: +24 dBu (12.3 Vrms)
  • External Slate Mic: +12 dBu (3.2 Vrms)

Outputs

• 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)
  • Line: +20 dBu (7.8 Vrms)
  • “-10”: +6 dBu (1.5 Vrms)
  • Mic: -20 dBu (0.078 Vrms)
  • X3/X4 Out: +6 dBu (1.5 Vrms)
  • Headphone outputs (¼”, TA-5): +14 dBu (4.0 Vrms)
    
    
• 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
    
    
• 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

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 Filters

• Adjustable 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

Recording

• A/D Converters
  • 32-bit, 120 dB, A-weighted dynamic range typical
  • Sampling rates 44.1 kHz, 47.952 kHz, 48 kHz, 48.048 kHz, 96 kHz, 192 kHz
    
    
• Bit Depth
  • 16, 24
    
    
• Recording
  • Internal 256 GB SSD; two removable SD Cards. Each 10% over-provisioned (reserved free space) 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 > 4 GB
  • AAC 2 track at 48 kHz, selectable bit rate 32, 64, 128, 192, 256 kbps

Automatic Mixing

• Dugan Automixer up to 8 channels on Left and Right Mix bus
• MixAssist up to 8-channels on Left and Right Mix bus

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 Cloud

• Compatible 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
  • All mic preamps off: 730 mA
  • All mic preamps on: 920 mA
  • All mic preamps on, 192 kHz sample rate, recording to internal SSD and 2 SD Cards: 1.07 A
  • 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 (H x W x D)

• 5.1 cm x 22 cm x 17 cm;
• 2.0 in. x 8.7 in. x 6.6 in

Weight

• 2.75 lbs (unpackaged, without batteries)
• 1.25 kg (unpackaged, without batteries)