Xylem Tube EP is an EP by Aphex Twin, the alias of the British electronic music producer Richard D. James. It was released in June 1992 through the Belgian label R&S Records. All the songs on this EP can be found on the 1994 compilation of early Aphex Twin material Classics. The EP consists of four acid techno tracks, including "Polynomial-C" which features complex arpeggiation, and "Tamphex", a hardcore techno track featuring a looping sample of a Tampax television advert.
