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Sound Devices 633

The 633 is designed for audio professionals requiring go-anywhere portability, without compromising recording or mixing capability.

The 633 is a compact, six-input mixer with integrated 10-track recorder featuring PowerSafe technology. It offers six analog inputs and records to SD and CompactFlash memory cards.

Input and Output Flexibility
The 633 offers three high-bandwidth mic/ line inputs on XLR connectors (3+3), complete with phantom power, high-pass filter, input limiter and variable pan. Three additional line-level inputs on TA3 (mini-XLR) connectors offer flexibility for more complex productions. All inputs are assignable to its six output buses, left/right plus Aux 1/2/3/4.

10-Track Recording
All six inputs plus output buses left/right and Aux 1/2 can be recorded to individual tracks. The 633 offers 10-track 24-bit, 48 kHz uncompressed WAV recording (96 kHz and 192 kHz sampling up to six tracks) to SD and CompactFlash memory cards. The two cards can be set independently, recording either identical material for a real-time backup, or combinations of WAV and time code stamped MP3 files.

Quad Power
Powered by a unique Quad Power supply with PowerSafe technology, the unit is operational from any of four power sources. Sources can include external DC (12-18 V), two removable 7.2 V L-type lithium ion cells, and six internal AA batteries. The 633 automatically switches from one power supply to the next when power is exhausted or removed. With its combination of power sources, the 633 can operate for a full production day on batteries alone.

PowerSafe Technology
When all power sources are removed or depleted, the unit's PowerSafe circuitry is activated. PowerSafe keeps the 633 operating for up to 10 seconds and ensures that all file operations are fully closed and the unit gracefully shuts down.
Two second power on-to-recording. Never wait on sound!

Ease-of-Use & Full Size Controls
Clear, fast, easy to navigate controls and interface; visible in all light conditions, configurable metering and display.

Integrated Time Code
The 633 integrates a rock-steady Ambient time code generator, supporting all common rates and modes. In addition to time code, the 633 supports extensive file metadata. Metadata is entered from either the front panel or from an attached USB keyboard.

Built for the Field
Designed to withstand the extremes of field production, the 633's small, lightweight, compact chassis is made from molded, metalized carbon fiber. It is built on Sound Devices strong heritage of high performance audio mixers, audio recorders, and video recorders.
  • AES input, two-channel AES3 or AES42, four channels of AES output.
  • Clear, fast, easy to navigate controls and interface; visible in all light conditions, configurable metering and display.
  • Stereo Linking, MS and L/R.
  • Input delay selectable on all six inputs plus output bus delay on all six buses.
  • User-configurable headphone presets plus a headphone favorite mode for quick source selection.
  • Specifications
    Frequency Response:
    10 Hz to 40 kHz ± 0.5 dB, -3 dB @ 65 kHz (192 kHz sampling rate reference 1 kHz)

    THD + Noise:
    0.09% max (1 kHz, 22 Hz-22 kHz BW, fader at 0, 0 dBu output)

    Equivalent Input Noise:
    -126 dBu (-128 dBV) maximum. (22 Hz - 22 kHz bandwidth, flat filter, trim control fully up)

    Input Types:
    XLR Mic: active-balanced for use with 600 ohm mics, 4k ohm actual; 12V or 48V phantom power, 10 mA max
    XLR AES: AES3 or AES42 (10 V power), SRC
    XLR Line: active-balanced for use with 2k ohm outputs, 10k ohm actual
    TA3 Line: active-balanced for use with 2k ohm outputs, 10k ohm actual
    RTN (3.5 mm): unbalanced stereo for use with 2k ohm outputs, 30k ohm actual

    Maximum Input Level:
    XLR Mic: 0 dBu (0 .78 Vrms)
    XLR Line: +40 dBu (80 Vrms)
    RTN (3 .5 mm): +24 dBu (12 .4 Vrms)

    Maximum Gain:
    Mic-In-to-Line-Out: 91 dB
    Mic-In-to-Aux-Out, -10 Out: 77 dB
    Line-In-to-Line-Out: 39 dB

    High-Pass Filters:
    Sweepable 80 Hz to 240 Hz, 12 dB/oct at 80 Hz, 6 dB/octave at 240 Hz

    Microphone Powering (each analog Input selectable):
    12 V Phantom: through 680 ohm resistors, 10 mA per mic available
    48 V Phantom: through 6 .8k resistors, 10 mA per mic available

    Analog Input Limiters (Inputs 1-3):
    Affects the output of the mic preamps only ('Trim' stage) · +16 dBu threshold (fixed)
    20:1 limiting ratio
    1 mS attack time
    500 mS release time

    Digital Input Limiters (Inputs 1-6):
    +6 dBu to +18 dBu threshold (adjustable) · 20:1 limiting ratio
    1 mS attack time
    500 mS release time

    AES42 Mode 1, provides +10 V Digital Phantom Power

    Output Type:
    XLR Line: Active Balanced for use with 600 ohm inputs
    XLR -10: Active Balanced for use with 10k ohm inputs
    XLR Mic: Active Balanced for use with 600 ohm inputs
    TA3 Active Balanced Mic/Line: pin-2 and 3 driven, for use with 3k ohm inputs · X3,X4 (3 .5 mm): Unbalanced, stereo, for use with 6k ohm inputs
    Headphones (1/4"): Unbalanced, stereo, for use with 8-2k ohm headphones

    Output Impedance (ohms actual):
    XLR and TA3 balanced outputs: 100 ohms at Line setting, 3 .2k ohms at -10 setting, 150 ohms at Mic setting
    TA3 Balanced Outs: 1k ohms at Mic and Line settings · X3,X4 (3 .5 mm): 100 ohms
    Headphones (1/4"): 100 ohms

    Line Output Clipping Level (1% THD):
    20 dBu minimum with 10k load

    Maximum Output Level:
    Line: +20 dBu (7.8 Vrms)
    -10: +6 dBu (1.5 Vrms)
    Mic: -20 dBu (0.078 Vrms)
    Aux 3/4: +6 dBu (1.5 Vrms)

    Output Limiters:
    Affects the outputs of the mixer
    Threshold selectable from +4 dBu to +18 dBu, 1 dB steps · 20:1 limiting ratio
    1 mS attack time
    500 mS release time

    AES3 Output:
    Transformer-balanced AES Out A,B on XLR
    110 ohm, 2 V p-p, AES and S/PDIF compatible with RCA adaptor

    Sampling Frequency:
    44.1 kHz, 47.952 kHz, 48 kHz, 48.048 kHz, 88.2 kHz, 96 kHz, 192 kHz

    24 bit

    A/D Dynamic Range:
    114 dB, A-weighted, typical

    Recording Storage Type:
    SD, SDXC, SDHC Card
    FAT32 or exFAT formatted, will format media on-board
    CompactFlash (CF)
    FAT32 formatted for CF and SD <32 GB, exFAT for SD cards >32 GB, will format memory cards in-unit

    File Type:
    Record: WAV (Broadcast Wave File format), polyphonic or MP3
    Playback: WAV (Broadcast Wave File format), polyphonic or MP3

    Timecode and Sync:
    Modes Supported: off, Rec Run, Free Run, 24h Run, External
    Frame Rates: 23.976, 24, 25, 29.97DF, 29.97ND, 30DF, 30ND
    Accuracy: Ambient generator, 0.2 ppm (0.5 frame in 24 hr)
    Time Code Input: 20k ohm impedance, 0.3 V - 3.0 V p-p (-17 dBu - +3 dBu)
    Time Code Output: 1k ohm impedance, 3.0V p-p (+12 dBu)

    Sample/Timecode Accuracy:
    ± 0.2 ppm (0.5 frames per 24 hours)

    External: 10-18 V on locking 4-pin Hirose connector, pin-4 = (+), pin-1 = (-).
    Removable x 2: 7.2 V (nominal) Sony L-type Li-ion, operational from 6.5-8.5 V,
    Internal: accepts 6 AA-sized (LR6) batteries, 1.2-1.6 V nominal (NiMH rechargeable compatible)

    Operating: -20°C to 60°C, 0 to 90% relative humidity; (non-condensing)
    Storage: -40°C to 85°C

    Dimensions and Weight:
    Dimensions: 6 cm x 24 cm x 14 cm (H x W x D); 2.2" x 9.4" x 5.6"
    Weight: 1.1 kg; 2 lbs. 9 oz. (unpackaged, without batteries)
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    Additional information
    For more information about the 633, please visit the website of Sound Devices
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