After experimenting with various loctal triode tubes, including the 7N7 and 7AF7, the RCA 7F7 with black parallel plates has proven to be an absolute standout. While the 7F7 is the loctal equivalent of the well-known 6SL7, its unique internal structure provides a performance that completely blew me away.
The defining characteristic of this tube is the incredible sense of air, it actually puts renowned Telefunken smooth plates to shame in this regard. It is a very natural sounding tube that combines tight bass with tremendous transparency, making it both highly detailed and dynamic.
Final Verdict: Highly Recommended for anyone looking to experience a level of air and transparency that rivals the best octal tubes.
After experimenting with various loctal triode tubes, including the 7N7 and 7AF7, the RCA 7F7 with black parallel plates has proven to be an absolute standout. While the 7F7 is the loctal equivalent of the well-known 6SL7, its unique internal structure provides a performance that completely blew me away.
The defining characteristic of this tube is the incredible sense of air, it actually puts renowned Telefunken smooth plates to shame in this regard. It is a very natural sounding tube that combines tight bass with tremendous transparency, making it both highly detailed and dynamic.
Final Verdict: Highly Recommended for anyone looking to experience a level of air and transparency that rivals the best octal tubes.