27, UY-227, MESH ANODE, GLOBE ENVELOPE, TRIODE
27, UY-227, MESH ANODE, GLOBE ENVELOPE, TRIODE The type 27 triode also known as the UY-227 is a UX5 based, 2.5V heater, indirectly heated audio valve that first came to market in 1935.
27, UY-227, MESH ANODE, GLOBE ENVELOPE, TRIODE The type 27 triode also known as the UY-227 is a UX5 based, 2.5V heater, indirectly heated audio valve that first came to market in 1935.