SED EL34 - High Performance Audio Power Tube

The SED EL34 is a glass envelope power pentode having a plate dissipation rating of 25 watts with convection cooling.It is intended for audio frequency power amplification service in either pentode, ultralinear or triode connection and single or push-pull/parallel applications. The SED EL34 has an indirectly-heated oxide cathode, which may be DC operated for the absolute best hum/noise performance.

The SED EL34 plate is made from a laminated material that improves heat transfer and has superior performance under overload conditions which are often seen with guitar amplifiers. Close manufacturing specification tolerances and improved processing provide enhanced reliability and superior sonic performance. The high sensitivity of a pair or quad of SED EL34s is an economical method to achieve high quality sound with a minimum of driving stage components.

THe SED EL34 is manufactured with the original Mullard design in the Svetlana factory in St Petersburg, Russia, and is designed to be a direct replacement for any EL34/6CA7 or equivalent. The SED EL34 gives electrical and audio performance very similar to that of the original Mullard EL34.


Outline Drawing


Typical Operation

Typical Performance Curves