Alkaline Spectrum is Optica's debut album, released on Kinetix Records (KINXCD03) in 1995.
The CD features 6 tracks. 4 tracks are exclusive to this release: "Alkaline PH9 (Remix)", "Analogue Spectrum (Remix)", "Energy Voyage" and "Techno Pigeons Eat Kippers". This is the first release for 1 track later found elsewhere: "". Its track "", first released in 1995, is a well-known favourite, appearing on 3 releases across the archive.
- 01Optica — Alkaline PH9 (Remix)
- 02Optica — Analogue Spectrum (Remix)
- 03Optica — Energy Voyage
- 04Optica — Techno Pigeons Eat Kippers
- 05Optica — Acid Munchies
- 06Optica — Rising High
