One band in which I play has a desk with two possible feeds for in ear monitoring. The drummer takes one feed into a separate small mixer into which he mixes samples and the other channel is vocal heavy for the two singers who take a wireless feed.
I was thinking at a gig last night if I could take an auxiliary output from the drummer's small mixer, feed that into the KPA auxiliary input and mix this with guitar in the KPA to an in ear mix for me. I wouldn't need to be wireless as I am tethered by my guitar cable anyway, so could use cable ties and join the headphone cable and guitar cable together.
Does anybody already use this method successfully? If not, will it be a good solution? The obvious answer is to try it although I do not have suitable headphones and would need to purchase a pair. The other obvious solution is to buy a new desk, although that is not my department!