The RCA 6CY7 is a dual triode vacuum tube designed primarily for audio frequency and low-power amplification applications. Housed in a compact 7-pin miniature glass envelope, it features two electrically independent triode sections, making it suitable for preamp stages, phase inverters, and signal processing in vintage audio equipment and electronic instruments.

Known for RCA’s consistent build quality, the 6CY7 delivers stable performance, low noise, and reliable operation in classic tube circuits.