Description
The 6S4A is a noval 9-pin medium-mu triode used in audio driver stages, phase inverters, and voltage amplification circuits. It was produced by several American manufacturers and was commonly employed in mid-century Hi-Fi equipment.
These are genuine New Old Stock examples, tested before despatch. The 6S4A can also serve as a driver valve in single-ended triode preamplifier designs.
Noval (9-pin) base. Supplied as a single tested valve.
