Analogue-Audio

XDA+ Analogue Output Board

8-channel Analogue-output Board Feat. 24-bit D/A

• 8 channels
• Dynamic range: 131 dB(A) @ 24 dBu (typ.)
• THD&N: 0.0006% @ 24 dBu (typ.)
• Outputs galvanically isolated using transformers
• Decreased power consumption

data sheet (169 kb)

This 8-channel output board features 24-bit D/A converters producing a maximum output level of 24 dBu at a dynamic range of 131 dB(A). Exceptional balancing specifications, transformer isolation, low output impedance, and optimum dynamic range provide uncritical connectivity for power amplifiers or analogue tape machines. The extensive utilisable dynamic range provides appropriate headroom even for signals with unfavourable level settings or without dynamic limiting, always enabling optimum signal quality to be achieved, for example, in mobile use.
Thanks to the circuit design and the production quality, no calibration is required; therefore, manually adjustable electronic components are not incorporated.

Stage Tec D/A-Converter Technology

The exceptional dynamic range of the XDA+ board is the result of a sophisticated DSP technology based on wide experience in dynamic-range enhancement for D/A converters and pioneering research on the problems of D/A conversion.

› Negligible converter inaccuracies Stage Tec D/A converters produce a stable and almost perfect conversion curve, showing almost no errors over the entire conversion range.

› Ultra-Low THD Stage Tec D/A converters produce ultra-low THD over a wide level range, making them perfectly suitable for applications such as monitoring, large sound-reinforcement systems, and high-quality analogue recording. The large effective range makes the application of the converters uncritical.

› Homogenous Noise Spectrum Stage Tec D/A converters have a homogenous noise spectrum over the entire conversion range. The intrinsic noise is practically imperceptible even at very low input levels.

› Low Latencies Thanks to the ultra-low group delay, the XDA+ board is perfectly suitable for live-sound applications.

Transformer-Insulated Output Stage

Thanks to the innovative circuit design, the XDA+ board features transformer-isolated balanced outputs that get around the flaws of conventional solutions. Compared to conventional circuits based on output transformers or electronically balancing, XDA+ boards provide the following benefits:

• Insusceptibility to magnetic fields
• Low THD&N at both low and high levels and even at low frequencies
• Low output impedance
• Excellent balancing
• True galvanic isolation
• Low dimensions and weight

RJ45 Version

The XDA+ board is also available in an alternative version featuring an RJ45 port. The port wiring is similar to the EN 50173 standard. This provides for quick and economical wiring using standard S/STP lines in fixed installations, in particular. The RJ45 version of the XDA+ requires only 4 DU (approx. 20 mm/0.79") in a NEXUS Base Device.
An RJ45-ADP transformer board is available for connecting signal sources that require XLR ports. This allows an XLR extension to be accomplished via a multicore S/STP or UTP multicore cable. The RJ45 wiring is the same as on the XDA+ board.

Low Space Requirements

Due to the XLR terminals, the board requires 1 slot and 8 DU in a NEXUS Base Device. If necessary, the front panel can be detached from the board and be installed in an adjacent module location; it is then connected to the board via a ribbon cable, and the space requirement will reduce to 4 DU. The D-Sub and RJ45 versions are only 4 units wide.