The lineup soon changed, with Yasushi Ozawa (bass) and Jun Kosugi (drums) performing throughout the 1990s, but returned to a duo with Haino supplementing percussion with tape-loops.

In 2025, a Haino concert scheduled to take place at Metz's Saint-Étienne Cathedral was moved to the Centre Pompidou-Metz following a mobilization of traditionalist Catholic movements, including banned far-right organization Civitas.

Haino is known for intensely cathartic sound explorations, and despite the fact that much of his work contains varied instrumentation and accompaniment, he retains a distinctive style.

Haino cites a broad range of influences, including troubadour music, Marlene Dietrich, Iannis Xenakis, Blue Cheer, Syd Barrett, and Charlie Parker.

Haino's uniqueness extends to his lifestyle: he has sported the same long hair, black clothes and sunglasses throughout his career, and is a strict straight edge vegetarian who has refrained from alcohol, tobacco and recreational drugs for his entire life.