The HDSPe MADIface from RME is a computer audio & MIDI interface specifically designed for Mac and Windows laptops that feature an Expresscard slot. The term MADI stands for Multi-channel Audio Digital Interface. It's a protocol that allows for higher numbers of audio channels to be transferred digitally, while allowing for longer cable runs of over 300 feet (100 meters). The HDSPe MADIface needs to be attached to other MADI capable hardware, such as the RME ADI-648 (which offers 8 ADAT optical inputs and outputs) in order for you to tap into its power.
MADI connections to external hardware are made through either fiber optic cable, or coaxial BNC, of which the HDSPe MADIface features an input and output of each. It's fully compatible with all MADI enabled equipment. The system makes it possible to run 64 inputs and 64 outputs of audio and MADI embedded MIDI, with sample rates up to 192 kHz, all on an ultra portable laptop computer. The HDSPe MADIface is also fully integrated with TotalMix software, which allows every channel to be routed and mixed to 64 physical outputs in any configuration you need, essentially providing an 8192 channel mixer.
In addition to being an audio & MIDI interface, the HDSPe MADIface can also act as an optical patchbay and router, a coaxial/optical converter and splitter, and a MADI redistributor, patchbay, and router. It features a configuration memory that will recall the settings that you had last used upon power-up. Also included is DIGICheck software, which is a high-quality spectral analyzer, level meter (for 2, 8, or 64 channels), a vector audio scope, and various other useful analysis tools. For tasks that require the flexibility to handle large track counts, the HDSPe MADIface cannot be beat in terms of compact portability and power.