I've recently hugely upgraded my headphone setup at work with a Gungnir, Lyr2, and HE-500.   Just because of the cost of all of it, I'd like to have some type of power protection.  I'm not sure if there's a recommended solution or not but I was hoping for something decent for under a couple...

I've slowly been upgrading the audio around my home starting with an Klipsch RF-82 II / Emotiva home theater setup.  Then some Monitor Audio RX1 (still trying to pick an dac/amp) for the bedroom for music.  Now I'm getting to where I'd like to give my office headphone setup a nice big upgrade as...