1 x MATCHED PAIR NOS EC92, VALVO, MADE BY SIEMENS MUNICH, AMP TEST, OWN BOXES

Amplifier test @ Ub=240V, Ra=13K, Rk=0.2K, Rg=1M, Rl=500K, Uin=0.5 Vrms. Uout, p2=14.9 / 15.2 Vrms, Ip=5.9 / 5.7mA @ test conds, picture 2, old box design.

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