Since headphones and K-ON are related to music, why not combine posts? I think it's a good idea at least...
K-ON: nothing new, but I thought it was cool that the OP was updated to include Azusa. See this post to see the differences in the OP.
Headphones: Got my new JVC HA-RX700 headphones today. On an initial listen, they have good bass and midrange, but the highs seem a little muffled compared to my Koss A130 headphones. They do sound a touch better than my Koss KSC-75 earphones. Hopefully they'll improve with some burning in.