Michael Gira

He uses several Guild guitars from the 90's in his solo concerts.

In this image, Gira can be seen playing a Gibson B.B. King Lucille.

Gira can be seen playing a Westbury Track II Bass in this photo.

The official Orange site states that Gira uses a Thunderverb 200.

The official Orange site states that Gira uses an Orange OD120.

Michael Gira uses the Guild OM-240CE Acoustic guitar during his solo performances and projects, as shown in a user-uploaded photo from Eventrocks.

Here you can see Michael Gira during his solo tour playing a Guild acoustic guitar through the Roland JC-120.

On the official Orange site, it is stated that Gira uses a PPC412.

Seen under his Orange amp head behind him

Good glance at 0:39, only used live as far as I know

after minute 7, you can see a pair of amps used by Michael Gira, a Mesa boogie combo that resembles a Dual Rectifier or a Rectoverb, and on top of it, a Mesa Mark IV, identifiable by the knob placement, used in live performances recorded for the live album Swans are Dead

This guitar was used by Michael during live performances for The Great Anihillator, Soundtracks for the Blind live performances and Swans are Dead, used allongside his Lucille guitar and an unknown telecaster.

this is the only video of a Swans live performance that features this very unique guitar, closeups thoughout the video show a dark headstock, some kind of circular object behind the bridge, a very aged body, and a dark pickguard. Unknown if the guitar was borrowed or actually owned by Michael