Integrated audio amplifier (2):

The preamplifier section is intended to be built on the printed-circiut board. Since the various connectors and controls (except S1 and S2) are mounted directly on to the board, the completion of the board should not present any difficulties. Take care, however, not to overlook any of the wtre brtdges , which should be soldered in pIace first. Circuits IC5 and IC6 are intended to be fttted on a common heat sink, wtth insulating washers between the chrps anel the heat sink. The completed board is shown in this article.