The Design of a High Performance Digital RF Receiver based on the Vacuum Tubes Technology for Hi-Fi Applications

This paper presents a design technique for a digital radio frequency receiver that uses vacuum tubes in the audio frequency stage to provide a high-fidelity signal on the system speakers. The system is built around an old analog receiver, whose architecture has been substantially modified. Both the advantages offered by the modern digital CMOS (low power consumption, high sensitivity and selectivity, increased reliability), and old analog technologies (superior sound quality, wider dynamic range, linear response without negative feedback, soft clipping) are exploited, in order to obtain high quality audio equipment.