sonifex rb adda2
  • It supports higher sample frequency rates up to and including 176.4kHz and 192kHz.
  • It has additional independent AES/EBU and Word Clock synchronising inputs so that the A/D and D/A sections can operate independently, with the digital outputs synchronised to an external master reference clock.
  • It has TOSlink optical digital audio input and output.
  • It has front panel push-button switches for all the main settings. The buttons are arranged in sets, where pressing the button advances the current selection and LED indicator.
  • A serial RS232 port is included so that the RB-ADDA2 settings can be controlled remotely. The front panel LED indicators to alter automatically when using RS232 commands.

A/D Audio Specification

Maximum Input Level:+27dBu balanced inputs, +17dBu unbalanced inputs
Input Impedance:>10kΩ unbalanced, >20kΩ bridging balanced
Dynamic Range:>110dB
Gain Range:Adjustable input gain of ±3dB on selected +12dBu, +18dBu or +24dBu, ref FSD
Distortion & Noise:>96dB THD + N at 1kHz

A/D Connections

Analogue Inputs:2 x XLR 3 pin (balanced) 2 x RCA phono (unbalanced)
Sync Inputs:1 x AES/EBU XLR 3 pin female 1 x TTL Word clock BNC
Digital Outputs:1 x AES/EBU XLR 3 pin male 1 x S/PDIF RCA phono 1 x TOSlink optical
Serial RS232:x 9 pin D-type plug
Mains Input:Filtered IEC, continuously rated 85-264VAC @ 47-63Hz, 10W max
Fuse Rating:Anti-surge fuse 1A 20 x 5mm

A/D Operational Controls

Analogue Input Source:Balanced XLR or unbalanced phono, via A/D SOURCE push-button
Analogue Input Level for FSD:+12dBFS, +18dBFS or +24dBFS, via A/D SOURCE push-button
Analogue Input Level Adjust:+9dBu to +27dBu via rear-panel pre-set pots
Sample Frequency Rates:32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz or 192kHz, via FREQUENCY push-button
Bit Depth:16, 20 or 24 bits, via BITS push-button
Channel Status Bits:Consumer mode, professional mode or follow input, via CS DATA push-button
Sync Input Select:AES/EBU, Word Clock or D/A input, via SYNC push-button
Sync Mode Select:Master, slave, auto, auto-lock, via SYNC push-button

Digital to Analogue Conversion

D/A Audio Specification

Maximum Output Level:+24dBu balanced output, +14dBu unbalanced output
Output Impedance:<50Ω balanced, <75Ω unbalanced
Dynamic Range:>110dB

D/A Connections

Digital Inputs:1 x AES/EBU XLR 3 pin female 1 x S/PDIF RCA phono 1 x TOSlink optical
Analogue Outputs:2 x XLR 3 pin male (balanced) 2 x RCA phono (unbalanced)

D/A Operational Controls

Digital Input Select:AES/EBU, S/PDIF or TOSlink optical, via push-button
Analogue Output Level for FSD:Selectable +12dBu, +18dBu or +24dBu output level, ref FSD, via D/A SOURCE push-button

Equipment Type

RB-ADDA2:Combined A/D and D/A converter, 24 bit 192kHz

Physical Specification

Dimensions (Raw):48cm (W) x 15.8cm (D*) x 4.2cm (H) (1U) 19” (W) x 6.2” (D*) x 1.7” (H) (1U)
(Boxed):59cm (W) x 27.5cm (D*) x 11cm (H) 23.2” (W) x 10.8” (D*) x 4.3” (H)
Weight:Nett: 1.6kg Gross: 2.3kg Nett: 3.5lbs Gross: 5lbs
* Note that this product is deeper than standard Red boxes.
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Sonifex RB-ADDA2


Tech Support

2-Year Warranty


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