This circuit was found in a Popular Electronics from the 90s. The transistors are general purpose, and the gain depends on the ratio between R2 and R1.
This preamplifier is recommended by Sanyo and is based on its LA3160 integrated circuit. The...
This very low current negative bias source can be used in any inverter. The output voltage is...
This non-inverting AC amplifier was found in the February 1990 issue of Radio Electronics...