Michael J Koster
About: I have been designing and building amplifiers since about age 9. My lifelong focus is audio circuits and tube amplifiers, both for musical instrument and HiFi use.
I'm currently building some equipment for recording studio applications, including DHT power amplifiers, tube crossovers, and microphone preamps. I believe these areas are where tube amplifiers can be of most benefit.
I'm particularly interested in exploring new tube amplifier circuit designs incorporating solid state elements to solve some long standing problems, in a way which is transparent to the character of the sound.
Do you build your own equipment
Yes
What topics are on your radar
tube hybrid amplifiers, multi-amp systems with line level crossovers, servo bias techniques, power supply interaction
What topics are you an expert in
Circuit design, modeling measurement and analysis
Current Project(s)
300b PP amp, current mirror hybrid amps, 4 way tube crossover, studio microphone preamp
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