VACUUM TUBES
6N8S
6N13S
The 6N13S vacuum tube (6Н13С rus.) is a Soviet double triode with separate cathodes, indirect heating, and low internal resistance. Designed as a control tube for voltage stabilizers, it is also widely used in push-pull audio amplifiers and OTL headphone amplifiers. Great sound detail! Manufacturer: SVETLANA. Equivalent to the 6AS7G , ECC230, 6N5S. NOS
6N23P
GU-50
The GU-50 (ГУ-50) is a Soviet power pentode for RF operation up to 120MHz, also widely used in audio amplifiers. Direct equivalent to Telefunken LS-50. Features 12.6V heater, 40W max anode dissipation, and 50W nominal RF output (60W max). Non-standard 8-pin base with metal cap. Manufacturer: Ulyanovsk. Condition: NOS