topamp

Hybrid audio power amplifier modules are not particularly new: over two-and-a-half years ago, in January 1977, we discussed the subject quite extensively. What is new is the rapid advance in technology that has led to very high quality modules. The Philips types OM931 and OM961, for example, that will provide 30 or 60 very `clean` watts, respectively, into 4 or 8 ohms. In this article, we will take a closer look at these `lightweights with a heavy punch`.