National Semiconductor's LM4562 dual 34V high-fidelity audio operational amplifier is said to practically eliminate distortion, with total harmonic distortion plus noise of 0.00003 percent. That performance reportedly exceeds the performance of hand-built audiophile discrete methodologies, thus setting a new standard for sound quality in high-end professional and high-quality consumer audio markets. It has wide 55-MHz gain bandwidth, 10-MHz power bandwidth.
Fifty-six-year-old Pasquale Russo has been doing metalwork for more than 30 years in a tiny southern Italy village. Many craftsmen like him brought with them fabrication skills when they came from the Old World to America.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.