Got one! https://www.sescom.com/products/view/product/productslug/sescom-ses-mini-4x1-6-passive-audio-signal-splitter It's overkill with its 6 outputs, but it works perfectly.

Also it's only two inputs. I need 3. :) iPhone, work computer, personal computer. Does look very nice, and I'm surprised at its low price! :D

Hi! I'd like a switch box, but the ones I've gotten from Amazon all ruined the sound. I am looking for 3 inputs and one output. The one shown below was the perfect thing, at least form-wise.

It's been at least 6 months. So I'll change those tonight and see what happens. Thanks, guys!  

Hi!   I have some Etymotic ER-4 headphones, and they're great. But just they other day, the sound became unbalanced. It leans to the right, like the left driver isn't putting out as much sound as it used to. Is this an issue with the filters? Or should I be talking to Etymotic about a...

They're not 125s I need to replace, it's an old set of 80s. But still, if it's hair, you're right about that being a bad reason to get rid of them. I'll check into that first.   Other folks: thanks for the recommendations, they will come in handy if this turns out not to be a...

Hi!   I love the flat-response sound of Grado SR-125 and Etymotic Research ER-4P headphones. I need to get something less expensive for use at work, since the employer is paying for it. I'm looking for over-ear headphones, open-air preferable (but not necessary) as I like to know what's...