The 6N6P-I pulse double triode has been designed for low-frequency power amplification under conditions of pulse operation. Cathode is oxide-coated with indirectly heated. Vibration: at frequencies from 10 to 600Hz with acceleration up to 6g. Multiple impacts: with acceleration up to 120g, at impact duration up to 80ms. Single impacts: with acceleration up to 500g, at impact duration up to 10ms. Linear loads: with acceleration up to 100g. Ambient temperature: from -60 to +85°C. Ambient pressure: to 3 atm.

Equivalent to the ECC99, similar to the E182CC. NEW, NOS and never used before!