Passionate about music and audio for 45 years. Retired software developer with EE degree. Former musician (who wasn't in the 1970s). Built and sold amps and guitar amps from schematics in high school to earn money. I've gone from listening to 90% jazz and 10% classical when younger to 10% jazz and 90% classical now. I'm particularly interested in simple/elegant designs, both in amplification and speakers. Much interest in open baffle and single driver speakers.