The RME ADI-8 DD consists of two (!) digital format converters with each up to 16 channels. It offers 28 different conversion modes, all with 24 bit resolution. A simplified list looks like this:

Left part

• 8-channel AES (4 x stereo, XLR) to ADAT optical || TDIF converter (96 kHz)
• 8-channel AES to 2 x ADAT || 2 x TDIF splitter (48 kHz)
• 2-channel AES to 8 channel TDIF || ADAT splitter (96 kHz)
• 8-channel ADAT / TDIF to 2 x ADAT || 2 x TDIF splitter (48 kHz)
• 16-channel ADAT / TDIF to ADAT || TDIF converter (48 kHz)
• 8-channel ADAT / TDIF to ADAT || TDIF converter (96 kHz)

Right part

• 8-channel ADAT / TDIF to AES (4 x stereo, XLR) converter (96 kHz)
• 8-channel AES to AES Sample Rate Converter (96 kHz)
• 2-channel AES to 8-channel AES splitter (96 kHz)
• 4-channel AES Double Wire to AES Single Wire converter (96 kHz)
• 4-channel AES Single Wire to AES Double Wire converter (96 kHz)
• 8-channel ADAT / TDIF to ADAT || TDIF Sample Rate Converter (96 kHz)

Because the ADI-8 DD is a dual converter, there are two modes available at the same time from the modes mentioned above - with few exceptions. Professionals are really thrilled by these features: the ADI-8 DD understands Sample Split, S/MUX, Double Wire and Double Line. It is thus compatible to all known methods for raising the sample rate by sample distribution, on all supported platforms. Also multiple units can be stacked and operated sample-aligned, using word clock. Both converters work both completely independent and intelligently coupled. The actual states of incoming and outgoing signals and ongoing operations within the unit are displayed with LEDs of different colours in an easily overseeable way. The 8-channel Sample Rate Converter in Hi-End 24 bit/96 kHz quality is only available in the left or right part of the device. It allows for a wide range of applications. When the internal clock is used, the SRC works as a perfect jitter-killer. And thanks to the SRC's clock-decoupling non-synchronisable items like CD-players and DAT recorders can be used together as if they were synchronisable. Devices from RME have an outstanding reputation. To maintain this, we keep on looking for details that others miss. A present example is the ADI-8 DD's SyncAlign® technology. As soon as more than one AES or SPDIF input are used, there is usually the chance of an accidental error of ± 1 sample misalignment between the stereo inputs. SyncAlign prevents this error and guarantees sample synchronicity between all 4 x 2 channels. All of the ADI-8 DD's I/Os support 96kHz/24bit. As ADAT optical and TDIF are usually restricted to 48kHz, in DS mode (Double Speed) two channels are being used for the transmission of one channel's data. The Sample Split algorithm used is also implemented in the Hammerfall and Hammerfall Light. Thus the ADI-8 DD also represents an ideal AES/EBU frontend for the Hammerfall series. The compact device with 19" width and 1 HU has numerous exceptional features like Intelligent Clock Control (ICC) and storing of all settings. Other highlights are:

• ADAT optical inputs, 24 bit, using RME's unsurpassed bitclock PLL for sample accurate lock
• TDIF-1 interface, 24 bit, SD-PLL, Emphasis support, DA-88 compatible
• Sample rate conversion 96 kHz/24 bit switchable for the AES/EBU inputs
• Copy Mode allows for copying data to an output of the same format (ADAT to ADAT etc.)
• Clock decoupling (re-synchronisation) per SRC
• Active jitter reduction per Serial Double PLL and SRC
• Digital Patchbay, allows for copying, duplicating and distributing of the digital input signals
• SyncCheck, unequalled technology for checking of clock synchronicity
• SPDIF mode switchable for the second ADAT optical output

Compare the ADI-8 DD with other stereo or multichannel converters and you will agree: the ADI-8 DD shows an unsurpassed flexibility together with a sensational price point! It is the long-awaited link in the semi-professional and professional area, from project studio to broadcast applications.

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