Analog controller for SoundStepper with HY554, "Fake SJ588" or any "B-Class-output" device like CM-108, 109 or 110 chipsets)

Drawing for SoundStepper circuit in "island" 1x1 protoboard, like this:

Only for "HY554" or other USB audio devices with "B-class" outputs, with bypassed output capacitors and 2V peak-to-peak output voltage swing (centered in 1.65V). If "center" is another level, adjust value of (47K) resistor from USB+.


Used Symbols: