DA-78HR
24-bit Digital Multitrack Recorder

Main features

• Selectable 24-bit or 16-bit recording format
• 44.1/48 kHz sampling frequency
• Backwards compatible with existing DTRS recordings
• Synchronization of up to 16 units (with DA-38, DA-88 and DA-98)
• 24-bit, 128 times over-sampling
• Delta/Sigma A/D and D/A converters
• MIDI In/Out/Thru
• Supports MMC
• Time code in/out with on-board SMPTE synchronize
• D-sub 25-pin balanced and RCA unbalanced analogue audio I/O
• TDIF digital audio interface
• SPDIF digital audio I/O
• Word sync IN/OUT/THRU
• On-board 2-track mix function
• Machine offset in sub-frame or sample rate accuracy
• Auto punch I/O in 0.1 frame accuracy
• Advanced internal electronic patchbay
• Set-up memory stored to tape
• Digital direct-track copying within a unit or between two units
• Shuttle wheel
• Track delay function
• ±6% pitch control
• Seamless punch I/O with digital cross fade
• Adjustable peak hold and release time level meter
• Built-in digital tone oscillator
• A/B head playback error rate-display function
• 3U rack-mountable

Specifications

Recording format

DTRS/DTRS-HR format

Recording method

Rotary-head, helical-scan

Tape

Hi-8MP or Hi-8ME

Heads

2 x recording, 2 x playback

Tracking system

ATF (Automatic Track Finding)

Erasure system

Overwrite

Drum speed

2000 RPM

Tape speed

15.955 mm/sec.

Equivalent tape speed

4.2 m/sec.

Maximum recording time

108 min. (using P6-120 tape)

Time from Stop to Play

<2 sec.

Fast winding time

80 sec. (using P6-120 tape)

Search speed

100-times play speed max.

Shuttle speed

Forward and reverse at 8, 4, 2, 1, 0.5 and 0.25 times play speed

Pitch control

±6% (in 0.1% steps)

Positioning accuracy

within 1 sample

Positioning lock time

within 8 sec. (2 DA-78HR synced together)

Number of recording tracks

8

Subcode

ABS track, SMPTE/EBU timecode

Error correction

Double-encoded Reed-Solomon code

Sampling frequency

44.1 kHz, 48 kHz

Quantisation

16-bit, 24-bit linear (DTRS/DTRS-HR)

Reference level

16 dB

Cross-fade time

10 ms to 200 ms (in 10 ms steps)

Track delay (switchable samples/ms)

-200 to 7200 samples (in 1 sample steps)
-4 to +150 ms (in 1 ms steps)

Offset

ABS sync: ±2 hours (in sub-frame or sample accuracy)
Timecode sync: ±12 hours (in sub-frame accuracy)

Sync clock source

Internal, Word In or Coaxial In

A/D converter

24-bit, 128-times Delta/Sigma over-sampling (switchable dither)

D/A converter

24-bit, 128-times Delta/Sigma over-sampling

Supported timecode formats

30 drop, 30 non-drop, 29.97 drop, 29.97 non-drop, 25 and 24 fps

Frequency response

20 Hz – 20 kHz, ±0.5 dB

Signal-to-noise ratio
(Fs = 48 kHz, 22k LPF, A-weighted)

>104 dB (DTRS-HR)
>100 dB (DTRS)

Dynamic range
(Fs = 48 kHz, 22k LPF, A-weighted)

> 104 dB (DTRS-HR)
>95 dB (DTRS)

Total harmonic distortion

<0.004% (DTRS-HR)
<0.005% (DTRS)

Channel separation

>90 dB at 1 kHz

Wow and flutter

unmeasurable

Analogue inputs (balanced)

25-pin D-sub, female

Analogue inputs (unbalanced)

8 x RCA

Analogue outputs (balanced)

D-sub, 25-pin, female

Analogue outputs (unbalanced)

8 x RCA

TDIF (unbalanced)

D-sub, 25-pin, female

AES/EBU, SPDIF (coaxial, unbalanced)

RCA

Remote In/Sync In

D-sub, 15-pin, female

Sync

D-sub, 15-pin, female

Word-Sync-Out

BNC, 75 Ohm at TTL level

Timecode input

RCA

Timecode output

RCA

MIDI

In, Out, Thru (conforms to MIDI standard)

Remote control connector

8-pin DIN (for RC-808)

Remote punch in/out

6.3 mm mono jack (for optional foot switch RC-30P)

Power supply

230 VAC, 50 Hz

Power consumption

34 W

Overall dimensions (W x H x D)

482 mm x 143 mm x 350 mm

Weight

8.1 kg