That definitely does sound like the K240 you describe. I have the K240 mkII and i find them to be very nice headphones, very durable and the removable cord is a very nice option.
I am actually trying to find a headphone that is closed back and sounds like the K240 mkII.
While the K240 have very smooth and slightly warm signature and nice punchy bass, i think coming from CAL's the bass could be a bit too light for him.
But they realy are worth the check if you can try them. They do need an Amp and they do need to be burned.
Actualy i think the Shure SRH 840 could be an option also. They should have more bass response and have slightly warm signature? The only complaint about the SRH 840 seems to be that they are fairly heavy headphone.
The Akg K240 Studio and the Akg K240 mkII are basically the same headphone with different color and the mkII includes in the package 2 cables (coiled and straight), and 2 ear pads (pleather and velour.) There is also a consumer version the Akg K242 that sounds the same and comes with the velour pads, but does not have the removable cable like the Studio and mkII has.
Edited by Notus - 4/5/14 at 5:14pm