Zeta is a UK-made tone arm from the 1980s. Zeta is best known for their straight arm-tube, gloss-black finish. Zeta were highly regarded tone arms in the 1980's and are even more sought-after by high-end audio collectors today.
The company doesn't see to be in business today but there are a few fan pages for the brand as well as a few people on the Internet boasting that they still have this audiophile tone arm working and sounding good.
Compare Zeta with other esoteric audiophile brands like Linn, Welltemptered, Schroder, SME, VPI and others.