Power Pentode
The Sovtek EL34 / 6CA7 Vacuum Tube is a glass octal type
pentode used in the output stages of audio-frequency
amplifiers. It not as harmonically rich as
Svetlana or SED tubes. It does however have a unique grid
block construction that allows it to operate at higher
trans-conductance and power ratings than most other EL34
tubes. Compared to other brands, the Sovtek
EL34 was found to have as much as a 6% higher output
at the same non-linear distortion level. These
specifications allow for a more consistent - longer
lasting vacuum tube.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.5 A
Preferred Substitutes ................. 6CA7