E80L Special Quality Output Pentode made by philips Miniwatt Made in Holland. Matched pair, tested good, 95% of emission.

E80L is a special quality 
(10 000 hours long life) output pentode designed for use in industrial equipment where stability of characteristics and long life are required. Used in high quality proffesional studio equipment (Telefunken V87 / Philips EL3710, …). The plate dissipation is 8 Watts. In a single ended class A amplifier the E80L gives 2.7 Watts. In class AB push-pull an output of 5.7 watts at 3.0% distortion is expected.

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