Simply put, I'm stunned.

It's hard to make a good sounding sealed headphone, and much more so a small, supra-aural (on-ear) type. They all seem to falter sonically somewhere. In-ear headphones were the only way to get really good portable sound ...

... until now.

I was rummaging around amongst HeadRoom's demo cans the other day, and stumbled upon a Beyerdynamic DJX-1.

"Hmm..." I sez to myself, "I don't remember ever seeing these before. I wonder what they sound like."

Once home, I pulled them out of the box and had a listen ... wow, these aren't bad at all. I wonder why I've never heard them before?

I am no stranger to Eddie Current – having owned numerous Craig Uthus creations throughout my headphone amp journey allows me the experience to say that no other manufacturer still in the business has been as consistent a home-run hitter in the tube amp department. Eddie Current has produced numerous tube amps that not only consistently sound good, but push the design envelope significantly over their peers while keeping cost within human reach.

Let's have a look, shall we?

Many of you will remember my previous attempt at analyzing break-in from this post. A lot of good comments and suggestions were made after the post, and I'd encourage those not familiar with this previous attempt to check it out.

Deciding that my time away at T.H.E. Show Newport would be the perfect opportunity to run some more break-in tests, I programmed my headphone measurement system to take frequency response, square wave, impulse response, and Total Harmonic Distortion data every hour for 100 hours.

Man! That's a lot of numbers ... I'm glad I have a computer.