Jumped into the realm of Head-Fi a few months ago with the Beyerdynamic DT990 pro - didn't take long for me to realize one set of cans simply isn't enough. Impressions of
Jupiter Audio Research "J-Mod" (HD650 mod) | Headphone Reviews and Discussion - Head-Fi.org
Sennheiser HD 650 Headphones - Reviews | Headphone Reviews and Discussion - Head-Fi.org