..but i have found no card that can provide extra analogue channel inputs (balanced XLR used for mics for example) as the say (expandable to more than 24 channels )and 8 Analogue outs to connect to 8 stage monitors for example at the same time or to provide 8 bus outs to connect to compressors or an 8-in hard disk recorder (recording each bus alone like percussion alone for example)
There is a full list of the mini YGDAI cards here
Most are digital I/O cards, as you can see, but there are a few analogue cards towards the bottom: all are line level only. The MY4-AD is the only card with XLR inputs (line level, four channels) and the MY4-DA has four channels of line out on XLRs.
Other cards provide eight channels in or out on D-sub or TRS jacks, and one does eight in and eight out, but the connector is a Euroblock.
...my question is : how can i use O1V96V2 for a live performance on a small band which has 20 mics and needs 8 stage monitors each one has its individual AUX ?? can it be done ???
No, I don't think it can -- not without external hardware. However, if you coupled up something like the behringer ADA8000 to the O1V96's ADAT sockets, you'd be able to add another eight mic inputs, and generate eight line outputs (all on XLRs). If you installed the ADAT Mini-YGDAI card, you could add a second ADA8000 for eight more mic ins and line outs. That would be the cheapest way of expanding the desk to provide the facilities you require.
Driving it to mix a live band with eight monitors feeds would be ...er... interesting
Technical Editor, Sound On Sound