2 records that might do it for you :

- Sleeper Awakens on the Edge of the Abyss ( Merzbow w/ Heeman)

- Space Metallizer (on Alien8Recordings )

you could also grab some (not so soft) MP3 stuff of his at http://mp.tochnit-aleph.com/ ( called Paradise Pachinko, about 35Mo files)

S/