The RCA 811 is rated 40 watts CCS and 55 watts ICAS. The RCA 811A is rated 45 watts CCS and 65 watts ICAS. The Russian G-811 is rated 40 watts CCS and does not have a factory ICAS rating. The Russian G811 has a larger plate vs the RCA 811 thus must be at least 55 watts ICAS rated plate as the RCA 811 s rated 55 watts ICAS. So lets completely dismiss Carl's statement of low G-811 plate dissipation.