Appendix 3 

The UVC based 2 Channel buffered passive Linestage

The picture below illustrates the complete installation of all components of the UVC system in a compact chassis, thus creating a complete passive buffered preamplifier with remote control (requires optional universal remote control).

This project is in many ways comparable to “Aunt Corey’s Homemade Buffered Passive Preamplifier” originally published by Corey Greenberg in the November 1991 Issue of Stereophile updated for the 21st century.

 

Instead of the long discontinued BUF-03 Buffer IC the UVC‟s own buffer uses a very simple, but very high performance J-Fet circuit derived from tube circuitry designed for direct coupling and shown among others by Erno Borbely in Issue 06 1999 of Audio Electronics (Page 18, Fig 15c).