Conrad-Johnson is an electrical/electronic manufacturing company that specializes in developing and refining vacuum-tube preamplifiers. Founded by Dr. William Conrad and Dr. Lewis Johnson in the mid-1970s, the company is renowned for its state-of-the-art audio equipment that combines the virtues of classic tube systems. Conrad-Johnson's methodology, established through their first preamplifier, has led to the creation of new products consistently praised for their musical satisfaction. The company's legacy includes being inducted into The Absolute Sound's High-End Audio Hall of Fame, reflecting their sustained relevance and iconic brand status in the industry.