About the Bugle Boys...I agree with Iamnothim. Unfortunately, they always sound kinda average in my audio chain. YMMV.
Man, I WANT to like them. I love that little cartoon tube blowing that trumpet like he's Miles Davis! But everytime I roll them in, I just don't hear the magic.
Interesting. I've got a matched pair of 1967 Bugle Boy O getters and find them absolutely competitive with my 1971 Amperex A frames. Both are good. The Amperex is silky, the Bugle Boys have more space and a slightly more sparkly high end. In fact I may even prefer the BBs.
But... I've got my HD-650s plugged into a Burson Soloist right now, and I'm liking what I'm hearing. Blasphemy!!!