I've ordered a single-input amp, and have three sources. The outboard high-end switch boxes are pricey: there's the Goldpoint SW4, with 4 inputs and 1 pr of outs for $352 (definitely way too much), and the Decware ZSB Zen Switch Box, with 4 inputs and 2 sets of outputs for $279 (really nice but...

Hi, folks. I'm new,  and glad to be here.   I just ordered a Bottlehead Crack kit yesterday. This will be my first headphone amp. I'm doing this in part to make my wife happier, because even at 3.5 watts, the BH Stereomour amp can play pretty loudly in my small listening room with a pair of...