Sound Devices 744T - Portable, Four-Track Audio Recorder  From Sound Devices

Serious Professional Four Channel Recording Device with Mic Preamps, Converters, and Time Code

Sound Devices

Manufacturer's Description from Sound Devices

The 744T is an ultra-portable, four-track file-based digital audio recorder. Known for pleasant sounding microphone preamps, the 744T is credited with frequency response linearity while maintaining very low distortion and noise.

Intuitive Control

No other recorder on the market matches its size, features, and durability. In addition, the 744T is designed to place an abundance of control in the hands of the user, while the menu architecture provides intuitive operation. The onboard time code generator and Sony-compatible Li-ion camcorder battery makes the 744T ready for any recording job—from over-the-shoulder to cart-based production.

Data Storage and Transfer

The 744T records uncompressed PCM or compressed MP3 audio to its internal hard drive, a Compact Flash card, and an external FireWire drive allowing for flexibility to compliment the required workflow. It can be connected to Mac OS or Windows computers with FireWire 400 for high-speed data transfer.

Unmatched Portability

The 744T possesses unmatched capability for its compact package when used as stand-alone portable recorder. It truly excels when preceded by a portable audio mixer such as Sound Devices' 552 or 302.

 

744T Key Features List

  • Two-channels of Sound Devices next generation microphone preamps with phantom, limiters, and high-pass filters
  • Channel 3 and 4 line-level inputs on TA3 connectors
  • Two-channel, balanced mic/line level outputs on TA3 connectors
  • Input-to-track assignment with 256 possible routing combinations
  • Record to its internal 80 GB hard drive, removable CompactFlash, external FireWire drive, or any combination of the three
  • AES3 (XLR) or AES3id (unbalanced AES on BNC) digital inputs and AES3id outputs
  • Programmable, sunlight-viewable LED level metering
  • WAV (Broadcast Wave compliant), mono or poly files, uncompressed PCM audio
  • 24-bit or 16-bit (with or without dither) and sampling at 32 kHz–192 kHz
  • Ultra-stable Ambient time code circuitry, tuneable to <0.2 PPM accuracy with all relevant TC rates
  • MP3 and FLAC record and playback capability
  • FireWire (IEEE-1394) port for high-speed data transfer to computers
  • 6-pin modular C. Link serial input and output for unit linking and future control and expansion
  • Removable Li-on rechargeable battery compatible with Sony M- and L-mount Li-on batteries
  • 10–18 VDC external input powers and charges on-board battery
  • Aluminum & stainless-steel chassis for exceptional durability and light weight
  • Class-defining compact size
  • Designed for the same operational environmental extremes as Sound Devices field mixers
Sound Devices

About Manufacturer

Sound Devices, LLC was founded in 1998 to fulfill a single promise—build field-production audio products that improve our customer's work life. Today, Sound Devices' growing family of audio mixers, digital recorders, preamplifiers, and computer interfaces are trusted by production professionals worldwide.

Sound Devices products are used in a wide range of applications including:

    * Single-camera ENG-style production
    * Documentary film and video production
    * Reality television production
    * Feature film production
    * Sports broadcasting
    * Multi-camera news magazine interviews
    * Sound effects gathering (SFX)
    * Acoustical test and measurement
    * Live music recording

Performance:
Sound Devices products deliver superb, consistent audio performance in extreme locations ranging from the high-altitude mountains of the Himalayas, the Costa Rican rainforests, and the soundstages of Hollywood. When portability, durability, and no-compromise audio fidelity matter, Sound Devices is the choice.

Quality:
All of Sound Devices products are designed and built to withstand punishing extremes—beyond your ability to abuse them. You may not be called to Lambeau Field (Green Bay) in late December, or to the Syrian Desert, but Sound Devices products have been, and have proven their performance. Built with parts from suppliers worldwide, Sound Devices products are assembled in Reedsburg, WI, in a defined, repeatable process. Sound Device's skilled assemblers believe in the products and the company.

The entire staff of Sound Devices is committed to designing and building products to use every day, with unquestionable performance, quality, and value. Sound Devices hope you feel as strongly about your Sound Devices products as we do.

Specifications

Sampling Frequency:
Internal: 32, 44.1, 48, 48.048, 88.2, 96, 96.096, 176.4, 192 kHz; external: 32–192 kHz via word clock input

Internal Data Path and Processing:
32 bit, 192 dB dynamic range

A/D, D/A Converters:
24 bit, 192 kHz sample rate maximum

A/D Dynamic Range:
114 dB, A-weighted bandwidth 
110 dB, 20 Hz – 22 kHz bandwidth

D/A Dynamic Range:
112 dB, A-weighted bandwidth 
108 dB, 20 Hz–22 kHz bandwidth

Frequency Res. Mic or Line:
10 Hz–40 kHz, +0.1, -0.5 (gain controls centered), Fs 96 kHz

Equivalent Input Noise:
Mic: -133 dBu max (-135 dBV), 50 ohm source, A-weighted filter 
Mic: -131 dBu max (-133 dBV) max, 50 ohm source, 20 Hz–20 kHz BW flat filter, gain fully up 
Mic: -130 dBu max (-132 dBV), 150 ohm source, A-weighted filter 
Mic: -128 dBu max (-130 dBV), 150 ohm source, 20 Hz–20 kHz BW flat filter, gain fully up

THD + Noise:
Mic: 0.004% max (1 kHz, 22 Hz–22 kHz BW, gain control down, -15 dBu input); line: 0.004% max (1 kHz, 22 Hz–22 kHz BW, gain control down, +16 dBu input)

Gain:
(Input dBu to -20 dBFS)
Mic (normal gain mode): 25 to 70 dB; mic (low gain mode): 10 to 55 dB; line: -6 to 18 dB, 0.1 dB increments

Input Clipping Level:
Mic input: -5 dBu minimum (normal gain mode, gain control fully down); mic input: +10 dBu minimum (low gain mode, gain control fully down); line input: +26 dBu minimum (gain control fully down)

High-Pass Filters:
40, 80, 160, 240 Hz @ 12/18/24 dB/oct (all menu selectable)

Mic Powering:
(Each XLR selectable): 48 V phantom through 6.8k resistors, 10 mA per mic available, menu-selected per channel in mic or line level positions

Mic Input Limiters:
Analog (pre-A/D converter), dual-stage optocoupler and FET, 
-4 dBFS threshold, 20:1 limiting ratio, 5 mS attack time, 200 mS release time

Analog Line Output Clipping Level:
+24 dBu minimum, 10k ohm load 
Attenuation & Resolution 0 to 40 dB, 1 dB increments

I/O – Digital:
AES3-id 75 ohm, 0.5 V p-p, S/PDIF compatible with RCA adapter

Digital Storage:
Internal hard drive ATA-5 interface 1.8-in or 2.5-in hard drive 4200–7200 RPM supported, FAT32 formatted,; Compact Flash CF type I, II, and + (microdrive) compatible, FAT32 formatted; file types: WAV or BWF, mono or polyphonic; MP3 @ 64, 96, 128, 240, or 320 kb/s stereo; utilities: format, speed test, and repair utility for internal HD and CF volumes

Data Transfer / Control:
FireWire peripheral-mode,IEEE-1394a compliant, 6-pin FireWire, Windows 2000, XP, Mac OS X only: C. Link 6-pin modular input and output, RS-232 machine control, word clock, time code transfer

Metering:
76-segment (4 x 19), sunlight-viewable, selectable peak, VU, or peak (with or without peak hold) with VU ballistics, variable brightness

Time Code:
Modes supported: free run, record run, 24 hour run, continuous jam; 
frame rates 23.976, 24, 25, 29.97DF, 29.97ND, 30DF, 30ND;
accuracy <0.2 ppm, when tuned with Ambient Master Controller; holds TC clock for 8 hours after main battery removal (AA time code battery installed); after 8 hours, retains time of day

Powering:
Operating cell, removable 7.2 V (nominal) Sony M- or L-type Li-on, operational from 6 – 8 V; time code battery, 1.2 V AA nickel metal-hydride; power supply (external) 10–18 V, 1 A minimum, via locking 4-pin Hirose connector, use Hirose #HR10-7P-4P (DigiKey# HR100-ND) for locking mating DC connector; pin-4 = (+), pin-1 = (-) or pin-3 = (+) and pin-2=(-).

Environmental:
Operation and storage: ambient temperature 5–55° C, relative humidity (non-condensing) <80%

Other:
LCD Display 202 x 32 pixel, extended temperature, backlit display; tone oscillator 100 Hz–10 kHz, variable output, assigned to tracks or outputs (menu-selectable);

Dimensions and Weight:
45 mm x 209 mm x 125 mm (H x W x D) 1.8” x 8.2” x 4.9” mass unpackaged: 1.2 kg, (2.6 lbs) without battery

Downloads

Action

Name

Description

744T User Guide

744T Fact Sheet

744T Front Panel Shortcuts