When Stereophile Magazine awarded Stellar Phono its coveted Analog Product of the Year award we were, of course, ecstatic. What an honor.
That award got me thinking about the near-impossible job of a phono preamplifier: to amplify without noise a tiny signal 30,000 to 50,000 times smaller than what comes out of your preamplifier.
I remember from 40 years ago my struggles to design without noise PS Audio’s first moving coil preamplifier. It felt impossible. How does one add, without additional noise, 30dB of gain in front of an already high gain moving magnet phono stage? Everything I tried came with unacceptable levels of noise. I searched, I studied, I consulted with experts. At the time, the general consensus was it couldn’t be done and we should instead do what everyone else was doing: use a step up transformer.
I own up to being a stubborn mule. Dammit! I was going to figure out an active solution and so I continued to slug it out with various schemes. Finally, after a year of constant failure, I succeeded. Low impedances and a single common base BJT amplifier were the answer.
One of the industry’s very first active moving coil amplifiers, the PS Audio MCA, was born.
That was four decades ago. Today, innovative bright young engineers like Darren Myers are blazing trails I couldn’t have imagined.
Progress. Breaking new ground. Moving forward. It’s what gets me up in the morning.