Mark Levinson No. 26

26S Dual Monaural Preamplifiers used Teflon circuit boards to supposedly differentiate the No.

26 and the 26S models, produced between 1991 and 1994 by Madrigal Audio Laboratories.

This unit utilizes Camac coaxial connectors (except for the XLR balanced ones), which were used in the medical industry as well, because they break hot before they break ground when unplugged.

An external power block, the PLS-226, was used to keep interference to a minimum.

The 26S included both phono and one balanced input as standard.