Sound Devices 664

Sound Devices 664

Sound Devices 664

Sound Devices 664

Sound Devices 664

Field Production Mixer

The Sound Devices 664 Field Production Mixer has six inputs channels and four output buses. All inputs and outputs are recordable to both CF and SD cards. This unprecedented amount of I/O connectivity and recording capability makes the 664 perfect for any production application.


The 664 has six ultra-low noise, high-dynamic-range analog inputs. These transformer-less preamps accept mic or line-level signals, and include analog peak limiters, high-pass filters, input trim controls, and direct outputs. Input connectors 1 and 6 can be selected to accept AES42 or AES3 digital signals.

Output Flexibility

In complex, multi-camera productions, output flexibility is essential. You can send its main left/right outputs to three cameras simultaneously. Two additional output buses, X1 and X2, appear on balanced TA3 connectors. AES3 digital outputs are individually selected to appear on the main XLR and multi-pin output connectors.


Record each of its inputs and its four output buses, for 10 record tracks. Recordings are saved to CompactFlash and SD cards. Recordings are either 16- or 24-bit Broadcast WAV files with extensive metadata. All popular production sampling rates are supported. When used with a CL-6 Input Expander, the 664 records 16 tracks, 12 inputs and four output buses.

Integrated Time Code

With the mixer’s built-in, rock-steady Ambient time code generator, multiple devices can operate in synchronization. The unit can operate as either a time code master clock or its clock can be jammed from external time code. A helpful time code compare utility shows the difference between internal and external time code.


Designed with knowledge gained from the industry’s top engineers and from Sound Devices’ expertise in portable mixers. the 664 was design for fast-paced environments, important controls are on dedicated knobs and switches, while additional features are quickly accessed through the intuitive LCD-based menu control.


  • Frequency Response: 20 Hz to 50 kHz, ± 0.5 dB
  • THD + Noise: 0.09% max (50 kHz, +18 dBu at line out, fade fully up)
  • Equivalent Input Noise: -126 dBu (-128 dBV) maximum. (22 Hz – 22 kHz bandwidth, flat filter, trim control fully up
  • Inputs:
    • 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 (with CL-6): active-balanced for use with ≤2k ohm outputs, 10k ohm actual
    • RTN A,B,C (3.5 mm/10-pin): 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 A,B,C (3.5 mm/Multi-pin): +24 dBu (12.4 Vrms)
  • High-Pass Filters: Sweepable 80 Hz to 240 Hz, 12 dB/oct at 80 Hz, 6 dB/octave at 240 Hz
  • Input Limiters: Individual limiters on both trim and fader stages, +16 dBu threshold, 20:1 limiting ratio, 1 mS attack time, 500 mS release time
  • Link I/O: Unbalanced stereo for linking to MixPre, 302, 442, 552, and 664; 2k ohm impedance
  • Maximum Gain:
    • Mic-In-to-Line-Out: 93 dB
    • Mic-In-to-Aux-Out: -10 Out: 79 dB
    • Line-In-to-Line-Out: 39 dB
  • Output Type:
    • Line: transformer-balanced for use with ≤600 ohm inputs, 100 ohms
    • -10: transformer-balanced for use with ≤10k ohm inputs, 3.2k ohm
    • Mic: transformer-balanced for use with ≤600 ohm inputs, 150 ohms
    • TA3 Mic/Line: active-balanced, pin-2 and 3 driven, for use with ≤3k ohm inputs, 1k ohm
    • TA3 Direct Outs Mic/Line: active-balanced, pin-2 and 3 driven, use with ≤3k ohm inputs, 1k ohm
    • Tape Outs (3.5 mm and TA3-type): unbalanced, stereo, use with ≤6k ohm input, 1.8k ohm actual
    • Headphones (3.5 mm and 1/4″): unbalanced, stereo, use with 8-2k ohm headphones, 50 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)
    • Tape Outs: +6 dBu (1.5 Vrms)
  • Output Limiters: Affects analog output. Threshold selectable from +4 dBu to +20 dBu, 1 dB steps, 20:1 limiting ratio, 1 mS attack time, 500 mS release time.
  • Recording Tracks: 10 tracks (6 inputs, 4 output buses); 16 tracks (12 inputs, 4 output buses) with CL-6
  • A/D: 24-bit, 114 dB, A-weighted dynamic range typical; 44.1 kHz, 47.952 kHz, 48 kHz, 48.048 kHz SR
  • Digital Outputs: AES3 transformer-balanced, in pairs; 1-2 XLR-L, 3-4 XLR-R, 5-6, multi-pin 1, 7-8, multi-pin 2, 110 ohm, 2 V p-p, AES and S/PDIF compatible
  • Recording Storage Type: Secure Digital High Capacity (SDHC), Secure Digital (SD), CompactFlash (CF), FAT32 formatted, will format memory cards on-board, WAV (Broadcast Wave File format) polyphonic
  • Sample/Timecode Accuracy: ± 0.2 ppm (0.5 frames per 24 hours)
  • 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, 0.5 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)
    • Word In/Out: square wave; 10k/75 ohm, 1-5V p-p input; 75 ohm, 3.3V p-p output, at SR
  • Power:
    • External: isolated 10-18 V on locking 4-pin Hirose connector, pin-4 = (+), pin-1 = (-)
    • Internal: accepts 5 AA-sized (LR6) batteries, 1.2-1.5 V nominal (NiMH rechargeable compatible)
  • 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): 2.1 x 12.6 x 7.8 in | 5.3 x 32 x 19.8 cm
  • Weight: 4 lbs, 12 oz (without batteries)