| The ADI-648 consists of two 64-channel digital format converters in reference quality, in a standard 19" box with 1 unit height. The compact device has numerous extraordinary features like Intelligent Clock Control (ICC), SyncCheck® , SyncAlign® , Bitclock PLL, SteadyClock, patchbay functionality, and a 16x16 Matrix router. All of the ADI-648 I/Os support 192 kHz/24 bit. As ADAT optical is 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 compatible to S/MUX and Double Wire, and also implemented in RME's Hammerfall DSP and FireWire devices. Thus the ADI-648 also serves as an ideal MADI frontend for these interfaces, on both Mac and PC. The format conversion between MADI and ADAT operates in both directions at the same time. LEDs of different colours show the present state of incoming and outgoing signals and of the internal processing in a clear way. The unique Intelligent Clock Control (ICC) allows for a flexible use with internal clock (44.1, 48, 88.2 and 96 kHz), external word clock or the digital input signals. These options are intelligently coupled in a way typical for RME, and easy to apply thanks to a clear and easily understandable display of the Lock and Sync states. Futhermore the unique 16 x 16 Matrix Router allows to use the ADI-648 as patchbay and splitter. All 128 input channels, MADI and ADAT, can be routed to all 128 outputs – even within the same format.