This circuit uses an amplifier from National Semiconductor, uncommon nowadays. The numbers in parentheses are for the second channel. The circuit is suitable for old tape recorders.
This driver for audio signals using the TAA435 integrated circuit was found in Philips 1968...
Found in a 1980s documentation, this circuit uses transistors from that time. Modern equivalents can be...
The SH-205R receiver was sold in the 1960s in Japan. It used two germanium transistors and had a...