A discrete op-amp ?

A project log for Piezo preamp rebuild

My Stagg double bass has a noisy preamp that precludes recording it. I should replace it. One day.

Yann Guidon / YGDESYann Guidon / YGDES 05/02/2016 at 00:340 Comments

Coincidences are great.

I need to make a preamp (voltage follower, mostly) for this bass. Impedance must be low but noise must be minimal.

OTOH in another project, I am considering building a discrete amplifier.

I could use an integrated circuit but I'm not sure that would answer all the questions that might appear. But since low-noise, low-power signal amplification is a goal shared with another project, it is possible to share insight and designs.