ECC33 Mullard brown base CV2821 welded plate 6SN7GT equiv. Stunning valve

Description

One of the most popular double triode that saw the light at the end of 1940s, in fact Mullard, in 1949, describe the ECC33 as a high slope, low impedance double triode with low heater consumption,

The twin triode sections inside the glass is a band of coating probably present to reduce any emissions from the glass

The plate is welded and the overall construction is sold and well made. One of the best valve used in all audio applications imncluding Leak 12.1 amplifier

Codes on glass 5K3 B7D; 5K3 6H3; FX1 B7K; 5K3; FX1; FX1 etc.