I'd wish to built an outboard "multiples" box. I need more multiples
(A-180 style), but my case space is already all occupied.

If I'm building a box inside wich I install a few 1/8" jacks and linked
them pin-to-pin... I should expect the same result as a A-180, right
Is there a limitation on how many jacks I can link before getting
signal loss Is there measures I should take to make it safe (ground
anything)

My idea seems so simple, that I fear I'm missing something important.
Looking closely at a A-180, I can't see anything else to it.

Thanks