(=> (Minimum-Dc-Output-Level $X $Y) (Voltage-Quantity $Y)) (=> (Minimum-Dc-Output-Level $X $Y) (Semiconductor $X)) (Minimum-Dc-Output-Level Lm383-7-Watt-Audio-Power-Amplifier (* 6.4 Volt)) (Minimum-Dc-Output-Level Lm383a-7-Watt-Audio-Amplifier (* 6.4 Volt))