Stax SRM-T700T Valve EnergizerThe newly designed SRM 700T is a hybrid electrostatic headphone driver. Inspired by the flagship model SRM T8000, the 700T uses solid state FET as a driver stage and vacuum tube as the output stage. The first stage is a custom made low noise dual FET while the 6SN7 GT tube has been adopted in the second stage of the vacuum tube system, while custom made low noise dual FET is employed in the first stage. The vacuum tube 6SN7 that has become the