Released in 2019, the Phi TC may look similar to other headphones in the Abyss AB1266 series, but the sound has changed with new planar drivers. Read moreReview: Abyss AB1266 Phi TC

The AB-1266 Phi is an American oddity both in its structure and its sound, and the hefty 6000 euro price tag is not entirely pulled out of thin air. Read moreReview: Abyss AB-1266 Phi