I would like to use 2 tone boards - one to drive the main speakers (via Hypex Amp Modules) and one to drive powered subwoofers. From research so far I think that, if I use USB inputs on the tone boards, the outputs are not likely to stay in sync.
Can more than 1 tone board be connected to a VIM and, if so, would the outputs of the tone boards stay in sync?
Alternatively, if I use something like a miniDSP nanoDigi (this has 4 SPDIF outputs) to drive the tone boards (using the SPDIF input on each tone board) will the tone boards stay in sync?
Or, is there a better way of doing this than either of the above?