USB2/3 MADI/ADAT

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rtp
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I need to interface an Alpha Link MADI AX to a laptop that has USB 2 and 3. The interface can be USB to MADI, or ADAT.

After poking around ALSA and these forums I need to ask for your current knowledge and expertise.

I found a driver for the pci RME MADI FX by Adrian Knoth, but it's unclear whether it's working. I sent him an email, but no response yet. No surprise because this isn't a USB device, so I couldn't use it anyway.

Assuming a working interface exists, I'll need the Ardour Wet Record feature released immediately. :)

paul
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You need to specify how many channels. ADAT is 8 per port; MADI is typically 28, 56, 32 or 64 channels. If you want "all" of them, that's a different kind of problem than if you want 8.

I note that both the RME and DigiCo solutions require drivers for Windows and OS X/macOS, which rules them out on Linux.

paul
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Same story with the MOTU M64 - even though it uses their lovely device-independent control app (via a browser), it requires device drivers because it is not class compliant.

seablade
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@paul

It is worth having a conversation with MOTU and RME on this actually. I have spoken with both of them either via email or tradeshows that indicates they think it may (Key word there of course) work on Linux via USB, however I cannot confirm it working myself.

Seablade

paul
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They all ship drivers for Windows and macOS, and nobody mentions an iPad. Not a good sign. MOTU even boasts about their driver performance.

seablade
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Yea, if they don't mention iPad that sounds worrisome, but I believe some of RME's like the MADIFacePro (USB Madi Interface) are Class Compliant and mentions it on their site. I was fairly certain MOTU's were as well, but maybe that is their non-madi things.

rtp
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Paul, I need 24 channels. Thanks for the responses guys.

alexmitchellmus
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@rtp I have been researching the LP32: http://motu.com/products/avb/lp32/specs.html

This device "should" theoretically be able to work on Linux (but I have not confirmed it)

alexmitchellmus
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(MOTU states that it is "USB 2 audio class compliant, USB 3 and iOS compatible)

paul
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MOTUs page specifically mentions their own drivers though ... so someone needs to reconcile that.

paul
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Ah, I was commenting on the MOTU MADI interface, not the LP32.

alexmitchellmus
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@paul & @rtp just got an email back from MOTU and the LP32 should work on Linux... Looks like a good mobile (and desktop) solution.

I also looked at a few DIY open source hardware interfaces, but I don't think they are ready yet for plug and play. (Pity as ADAT patent has run out IIRC)

rtp
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@alexmitchellmus nice find, thank you.