Hey all,   I am looking for something that seems simple, but in practice is turning out much harder to find than I thought.   I want a desktop headphone amp with support for speaker passthrough. That is, I want an amp that will send music to my headphones when they're plugged in, but when I...

  My main pair of cans is an AKG Q701, but I needed something a bit more portable (and closed-back) for traveling--but I didn't want to spend a ton of money. I got a used pair of black DT 235 'phones on Amazon for about $30. They were...shall we say, a good start! But not perfect.   I liked...