Main pair:
http://www.amazon.com/AKG-K240MKII-STUDIO-STANDARD-55OHM/dp/B0016MNBAM/ref=sr_1_1?ie=UTF8&qid=1353374847&sr=8-1&keywords=akg+240+mkii
Backup headphones:
http://www.amazon.com/Skullcandy-Hesh-Headphones-S6HECZ-060-Shattered/dp/B003KN2K2K/ref=sr_1_43?s=electronics&ie=UTF8&qid=1358382595&sr=1-43&keywords=skullcandy+headphones
http://www.amazon.com/AKG-K240MKII-STUDIO-STANDARD-55OHM/dp/B0016MNBAM/ref=sr_1_1?ie=UTF8&qid=1353374847&sr=8-1&keywords=akg+240+mkii
Backup headphones:
http://www.amazon.com/Skullcandy-Hesh-Headphones-S6HECZ-060-Shattered/dp/B003KN2K2K/ref=sr_1_43?s=electronics&ie=UTF8&qid=1358382595&sr=1-43&keywords=skullcandy+headphones