Abyss AB-1266 Phi, the headphone Olymp. In the latest TC (Total Consciousness) version, it even surpasses its previously unmatched predecessors. The original Abyss set a new reference for high-quality craftsmanship and audiophile sound in the over-ear headphone class. Tactile far removed from any expensive plastic product for the mass market, the giant continues this claim and remains unique. Sonically, the newly developed 66 mm planar magneticloudspeaker drivers deliver an unmatched resolution. The sound of the Abyss is so realistic and clear that it can be described as surreal. This headphone plays in its own league.