I recently looked for a good alternative and could not find one. I ended up buying several MOTU 24 i/o units on eBay.
Ewan A. Macpherson
School of Communication Sciences & Disorders
and National Centre for Audiology
University of Western Ontario, London, Ontario
Yu-Xuan Zhang wrote, On 3/18/2014 4:48 AM:
Any experience/recommendation for a high-fidelity (ASIO compatible)
audio card to drive a 24-channel speaker ring that is currently
available on the market? The last one I worked with is Motu 24 I/O 96
kHz Cue Mix DSP, which is out of production now.