When the OA21 amplifier was created 35 years ago we simply did not know it was going to be a legacy... We did not know that a simple and classic design amplifier would be appreciated along time and would become a part of many families. Many electronic designs have changed over and over but the OA21 became been timeless. Like a well known watch or a world renowned car, pure and perfect - It's built to last for its owner and the next generation.
Behind every one of our designs there is crucial structure as to how we create it. It matter only that you appreciate  what you are buying and why.