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The 788T: Portable, Eight Input, Twelve-Track Recorder with Time Code

The 788T and 788T-SSD are eight input, twelve-track digital audio recorders designed for production sound. Its eight pristine analog inputs accept microphone or line-level signals, provide 48 V phantom power, offer peak limiters for microphone signals, and adjustable high-pass filters. For additional flexibility, the 788T accommodates eight channels of balanced AES3 digital input and six channels of balanced analog line-level and AES3 digital output. Support for AES42 digital microphones is also available.

788T Key Features

Routing and Tracks
Extensive routing flexibility allows recording of isolated inputs while simultaneously recording mixed tracks. Inputs or track assignments can be sent to analog and digital outputs.

Data Storage and Transfer
The 788T has three options for recording storage that can be used simultaneously.
Internal storage: 788T (250 GB SATA), 788T-SSD (240 GB Solid State Drive)
CompactFlash cards with UDMA support
External FireWire hard drive or DVD-RAM (with bus powering)
The 788T Recorders can be connected to Mac OS or Windows computers with USB or FireWire 400/800 for high-speed data transfer.

788T Key Features List
Eight mic/line inputs, each controlled with front panel, pop-out gain controls
12-track recording, to record iso’s, stereo mix track, and two-track aux, Aux1, Aux2
Each input has solo headphone monitoring, 48 V phantom, limiter, polarity reverse, high-pass, and selectable delay
Selectable sampling rate converters on each digital input
Sampling rate selectable up to 96 kHz
AES42 digital microphone support
Backlit LCD display viewable in any environment
8 x 13-segment Peak/VU meters with arm LED
Word clock in and out with tri-level video sync support
Time code generator supports all data rates; holds time code for four hours with no power sources attached
Internal 250 GB, 2.5-inch SATA hard drive; 240 GB SSD in the 788T-SSD
CompactFlash slot with UDMA support
Powered by removable Li-ion rechargeable batteries
External DC power input operates unit and charges Li-ion battery
Back panel multi-pin connector for one-cable connection to digital mixing board (AES input/output, power, switch closure in/out)
FireWire 400/800 and USB 2.0 connections for ultra-fast file tranfer between 788T’s CF and HDD to computer
USB keyboard input for control
Aluminum & stainless-steel chassis for exceptional durability and light weight
Designed for the same operational environmental extremes as Sound Devices field mixers

788T Specifications

Sampling Frequency

Internal: 32, 44.1, 47.952, 48, 48.048, 88.2, 96, 96.096, 176.4 and 192 kHz
External clocking: 32–96.096 kHz via word clock or digital inputs
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

123 dB, A-weighted bandwidth
120 dB, 20 Hz–22 kHz bandwidth
D/A Dynamic Range

114 dB, A-weighted bandwidth
111 dB, 20 Hz–22 kHz bandwidth
Analog Audio

Frequency Res. Mic or Line

10 Hz–40 kHz, +0.1, -0.5 (gain controls centered, measured at 48 kHz)
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: Off (0) to 76.0 dB
Line: Off, -26.0 to 50.0 dB
Input Impedance

Mic (XLR and TA3): 3.3k ohm; Line (XLR and TA3): 3.3k ohm
Input Clipping Level

Mic input: +8 dBu minimum (gain = 10 dB); line input: +26 dBu minimum (gain = 0 dB)
Input Topology Mic and Line

Fully electronically balanced, RF, ESD, short, and overload protected; pin-2 hot, pin-3 cold
Gain Matching Mic/Line inputs

0.1 dB increments, channel-to-channel while linked
Common Mode Rejection Ratio

Mic: 40 dB minimum at 80 Hz
Metering

112-segment (8 x 14), sunlight-viewable, selectable peak, VU, or peak (with or without peak hold) with VU ballistics, variable brightness
High-Pass Filters

40-320 Hz in 10Hz steps @ 6/12 dB/oct (Setup Menu selectable)
Mic Powering (Each analog input selectable)

48 V phantom through 6.8k resistors, 10 mA per mic available, menu-selected per channel in mic or line level positions
Mic/Line Input Limiters

Variable threshold -12 to -2 dBFS; Infinite:1 limiting ratio, 2 mS attack time, menu-selectable release time 200-2000 mS, soft-knee starting approximately 6dB below setting.
Line Output Clipping Level

+24 dBu minimum, 10k ohm load
Attenuation & Resolution

0–20 dB, 1 dB increments
Output Topology Line

Fully electronically-balanced, RF, ESD, short, and overload protected; pin-2 driven hot, pin-3 driven cold; let pin-3 float for unbalanced connections.
I/O – Digital

Balanced AES in 1-8 on DE15 connector 110 ohm, 2 V p-p, AES and S/PDIF compatible with RCA adaptor, AES42 mode 1 compatible and provides 10 V to AES42 microphones
AES3 Balanced AES out 1-4 on TA3 connector; Balanced AES out 5-6 on DE15 connector 110 ohm, 2 Vp-p, AES and S/PDIF compatible with RCA adaptor
Digital Storage

Internal hard drive SATA interface 2.5-in hard drive 4200–7200 RPM supported, solid-state drive (SSD) support, FAT32 formatted, up to 2 TB addressable
CompactFlash CF type I, II, and + (microdrive) compatible, UDMA (300x) compatible, FAT32 formatted, up to 2 TB addressable
File Types

Record: WAV (AES-31 format), mono or polyphonic, at supported Fs, 24-bit or 16-bit;
Playback: WAV (AES-31 format), mono or polyphonic, at supported Fs, 24-bit or 16-bit;
MP3 @ 32, 64, 96, 128, 160, 192, 256, or 320 kb/s stereo; MP2 @ 64, 96, 128, 160, 192, 256, or 320, 384 kb/s stereo
Utilities

Drive formatting and speed test for internal hard drive, CF and external drive volumes
Data Transfer / Control

FireWire 400: For connection to external drives and computers: IEEE-1394a compliant, 6-pin FireWire, Windows 2000, XP, Vista, 7) Mac OS X only
FireWire 800: For connection to external drives and computers: IEEE-1394b compliant, 8-pin FireWire, Windows (2000, XP, Vista, 7), Mac OS X only
USB 2.0: Slave mode only. For connection to Windows( 2000, XP, Vista,7) Mac OS X only
USB Keyboard Input: For connection to USB keyboards for entering notes and controlling features and functions of the 788T via user selectable keyboard shortcuts.
Time Code

Modes Supported: Off, free run, record run, 24 hour run, external time code receive, free run -auto output mute
Frame Rates: 23.976, 24, 25, 29.97DF, 29.97ND, 30DF, 30ND, 30+
Accuracy: 0.2 ppm, when tuned with Ambient Master Controller, holds TC clock for 4 hours after main battery removal; after 4 hours, retains time of day
Input / Output 20k ohm impedance, 0.3V p-p (–8 dBu) minimum / 1k ohm impedance, 3.0V p-p (+12 dBu)
Word Source

Internal Sync: internal word clock generator
External Sync Input: Word Clock, AES3, or Video (NTSC, PAL, and Tri-Level)
Word Clock Output: Square wave, running at sample rate, 3.3 V p-p, 75 ohm
Power

Power supply (batteries): operating cell, removable 7.2 V (nominal) Sony L-type Li-ion, operational from 6.5–8.5 V, time code battery, internal 3.6 Li–ion
Power supply (external): 10–18 V, 1000 mA minimum, via locking 4-pin Hirose connector, use Hirose #HR10-7P-4P (DigiKey# HR100-ND) for locking mating DC connector; pin-1 (-), pin-4 (+).
Environmental

Operation and Storage ambient temperature 5–55° C, relative humidity (non-condensing) 80%
Other

Tone Oscillator: 100 Hz–10 kHz, variable output, assigned to tracks or outputs (menu-selectable), continuious or L-ident mode
Dimensions and Weight

Size: 45 mm x 257 mm x 163 mm (H x W x D) 1.8″ x 10.1″ x 6.4″
Mass: unpackaged: 1.7 kg, (3 lbs 12 oz.) without battery