Later Designs

Preamplifier of 1982

This preamplifier was designed in 1982, and a prototype made in 1983. Only one unit exists, and it sounds wonderful — by far the best-sounding preamplifier I have ever made. Still today I’m rather pleased with the design. It is divided into several gain blocks. In the accompanying schematics section I’ve shown the block schematics and one of the gain stages, which is used in two places. More details on this design will follow later.

Power amplifier of 1982

This design was also made as one prototype, but it never made it into a fully working version, although it worked partly. The design was rather good anyway, and had a lot of interesting features. The cooling fins, for example, used new heat-transfer knowledge to its best — I have never seen anything similar, either before or after.