This is the first of two 7"s on Out Put records that feature Sympathy Nervous. Other than the second volume of this series, I am unaware of any other releases from this label.
Here are the liner notes:
SIDE A: SYMPATHY NERVOUS (S.N.): YOSHIFUMI-NIINUMA (MACHINES) TATSUYA-SENZAKI (GUITAR, VOICE). THIS SIDE USES LOW FIDELITY AND HIGH DISTORTION RECORDING EQUIPMENTS. 1 MULUTI VITAMINS WITH MINERAL. 2 SONG
SIDE B: ANEMIC SESSION: S.N'S FRIENDS (VOICES, INSTRUMENTS). COMPOSED BY S.N. 1 ANEMIC PARTY. 2 ANEMIC SESSION.
STUFF: ENGINEERED BY YOSHIFUMI-NIIMURA. COVER PHOTO BY TATSUYA-SENZAKI. PRODUCED BY S.N. FACTORY 1981 OUT PUT RECORDS
The way ahead of it's time Sympathy Nervous LP on Vanity can be found here at Mutant Sounds, as well as a cassette they released on G.R.O.S.S. (run by Aube). After the Vanity label releases, these two Out Put 7"s and a couple cassettes, Sympathy Nervous appears to have not released anything for over 10 years. Sympathy Nervous re-emerged on (their own?) Negative Emission label in Japan, and then a couple years later on KK/Nova Zembla with a harder more contemporary industrial/techno style.
Yoshifumi Niimura has a website with a discography and mp3 excerpts of many tracks, including the Out Put Vol.2 contribution here. Mp3s of soundtrack material & sound effects are also there.