PREAMPLIFICATORE DYNACO PASS anni 60

Descrizione

The Most Important Preamplifier In the World: The Dynaco PAS Introduction: The venerable Dynaco PAS is perhaps the most famous stereo preamplifier of all time, Much like the Dynaco ST-70, it introduced the magical sound of tubes to thousands of audiophiles throughout the past decades. The PAS is still a popular model, both in stock form or as a platform to be tweaked and modified. In this article, I will touch on a general outline of the circuit, the sonics strengths and weaknesses, some of the more popular modifications, and an idea of what to look for when rolling tubes. The Circuit: So what is a Dynaco PAS? There are three iterations. The PAS-2, the earliest stereo version, with circuitry taken from the PAM-1 mono unit and a gold faceplate with brown knobs. The PAS-3, with a more modern silver faceplate with matching knobs. And finally, the PAS-3X with improved tone controls. This is a full-function preamplifier with tone controls and inputs for phono, reel-to-reel, tuner, and others. Gain, of course, is higher than modern preamplifiers since this was the days before high output CD players.