RME HDSPe MADI – 128-channel PCI Express card with 1× optical MADI (SC) and 1× coaxial MADI (BNC), Word Clock I/O, 2× MIDI I/O (breakout), 6.3 mm analog line/phones output, TotalMix FX mixer (without DSP FX), and SteadyClock FS clocking; up to 64×64 @ 44.1/48 kHz, 32×32 @ 88.2/96 kHz, and 16×16 @ 176.4/192 kHz.
HDSPe MADI fully utilizes the MADI standard: it supports 56/64 channel modes, 48K/96K frame (Single/Double Wire), and sampling rates up to 192 kHz using multichannel S/MUX. TotalMix FX allows free routing and mixing of 64 inputs and 64 playbacks to 64 physical outputs (8192-channel matrix). The analog monitor output (line/headphones) enables fast listening without the need for an external converter.
The main bracket features optical and coaxial MADI I/O, plus a stereo analog output. The included extension board adds Word Clock In/Out (BNC, with switchable termination) and a breakout connector for 2× MIDI In/Out. Thanks to SteadyClock FS, the card can recover clock signals directly from MADI with high jitter immunity. While AVDECC is not supported, a virtual MIDI over MADI port is available. ARC USB compatibility and the DIGICheck software suite round out the feature set.
KEY FEATURES
- 1× optical MADI I/O (SC) + 1× coaxial MADI I/O (BNC)
- Up to 64×64 @ 48 kHz; 32×32 @ 96 kHz; 16×16 @ 192 kHz; supports 56/64 ch and 48K/96K Frame (Single/Double Wire)
- TotalMix FX: flexible routing and submixes; 64 In + 64 Playbacks → 64 Out (8192-channel matrix)
- Analog line/phones output 6.3 mm for direct monitoring; dynamic range up to approx. 116 dB (RME spec)
- Word Clock In/Out (BNC; transformer-isolated; switchable 75 Ω termination)
- 2× MIDI In/Out (via breakout) + virtual MIDI over MADI port
- SteadyClock FS – high jitter immunity, reliable sync from MADI or Word Clock
- ARC USB support; includes DIGICheck analysis software
TECHNICAL SPECIFICATIONS
- Interface: PCI Express x1 (rev. 1.1), 2.5 Gb/s; full duplex (up to 500 MB/s)
- I/O: optical MADI (in/out), coaxial MADI BNC (in/out), Word Clock In/Out (BNC), 2× MIDI In/Out (breakout), analog line/phones 6.3 mm
- Channels/sample rates: 64×64 @ 44.1/48 kHz; 32×32 @ 88.2/96 kHz; 16×16 @ 176.4/192 kHz
- MADI modes: 56/64 ch; 48K Frame / 96K Frame (Single/Double Wire); S/MUX for DS/Quad Speed
- Clock sources: Internal, MADI (opt./coax), Word Clock; SyncCheck, Intelligent Clock Control
- Word Clock: In with switchable 75 Ω termination (works from ~1.2 Vpp), Out 4 Vpp/75 Ω
- Phones/Line Out: stereo 6.3 mm TRS; plays back pairs 63/64, 31/32 or 15/16 depending on sample rate
- Additional functions: MADI coax/optical format converter, patchbay/router in TotalMix; MIDI over MADI; Flash Update for firmware





