A Miniature Four Channel Headstage Amplifier J. S. Pezaris Computation and Neural Systems California Institute of Technology, Pasadena, CA 91125, U.S.A. Abstract The design and construction of a miniature four-channel headstage amplifier for use with tetrodes is presented, including specification, response characteristics, schematics, printed circuit board layout, parts lists, and suppliers. Fetch PDF of paper John Pezaris, Caltech, Mail Code 216-76, Pasadena, CA 91125, pz (at) vis (dot) caltech (dot) edu, 15 Feburary 2000.