This is the listening session after the phono stage basic design class in the morning.  Listen to some DIY and inexpensive commercial phono stages. Intro 10 min Main Phono Units: Jim Hunton's Pass DIY Pearl II, separate power supply with shunt regulators, Dayton foil/film caps, DC servo. ($800 total, 20 min main focus) Hagerman Cornet […]

This will be a two-part experience (there will be a separate announcement for those members who only want to participate in the listening session and not in the class): A class on the design basics of phono stages from 10:00 to 11:30 AM PST Lunch - there are several locations for lunch nearby A listening […]

Join us for an interesting and informative afternoon with Ralph Karsten, founder and CEO of Atma-Sphere. Ralph will discuss his background, how he got into the HiFi business, his unique approach to amplifier design and the latest product line he's working on - a class D GaN amplifier.  It should be an fascinating discussion how […]