Audio input selector

The design described here enables the selection of up to eight inputs of a prearnplifier without any switch clicks or other noises. It may be used with virtually any preamplifier, provides individual switching of tape and line outputs, and enables monitoring of a tape recording. Morever, it needs relatively few components and is so compact that together with a high quality preamplifier it takes 110 more space than a typrcal car radio/cassette player.