swampwalker has the right idea.
I wonder though if it would make sense for you to all-our on a 16-20 channel mixer (mackie makes some great ones) unless you think that you'd benefit from adjustable level, gain and EQ per channel.
One thing I think I would consider is making my own. If I understand your ultimate setup, you'd have 20 stereo inputs and 20 stereo outputs on the tape side but only a single input and single output on the source side. In other words, all 40 I/Os would be wired in parallel.
Theoretically you could build one pretty easily (project enclosures are easy to come by as well as all necessary parts) and I think I would forego any switching capability to simplify the build - Of course that means that all inputs and outputs would be active all the time, which might be handy for you.
It's interesting that you're looking for such a solution since I don't think I've ever heard of anyone needing to do this (unless you're in the tape duplication business) which would explain why there isn't an obvious off the shelf solution
Good luck
Greg
I wonder though if it would make sense for you to all-our on a 16-20 channel mixer (mackie makes some great ones) unless you think that you'd benefit from adjustable level, gain and EQ per channel.
One thing I think I would consider is making my own. If I understand your ultimate setup, you'd have 20 stereo inputs and 20 stereo outputs on the tape side but only a single input and single output on the source side. In other words, all 40 I/Os would be wired in parallel.
Theoretically you could build one pretty easily (project enclosures are easy to come by as well as all necessary parts) and I think I would forego any switching capability to simplify the build - Of course that means that all inputs and outputs would be active all the time, which might be handy for you.
It's interesting that you're looking for such a solution since I don't think I've ever heard of anyone needing to do this (unless you're in the tape duplication business) which would explain why there isn't an obvious off the shelf solution
Good luck
Greg