NE5532 Preamplifier Tone Control Circuit Based on the two-channel stereo preamplifier circuit ne5532 op amp and bass, treble, balance, volume control can do. NE5532 preamp tone control circuit supply symmetrical +-12v positive regulator 7812, 7912 small 12v negative regulator... Electronics Projects, Tone Controled Preamplifier Circuit NE5532 Op amp "audio control circuits, " Date 2019/08/02