Power capacitor
We'll start with the power supply capacitor. This cap isn't required if you're powering off of batteries or a good quality supply, but if you're using wall adapter, this might give you just a little cleaner power especially with high amplification levels
The longer lead goes into the pad marked +
The ground (-) pin may be a little tough to solder since the ground plane acts like a large heat sink
Speaker Terminals
You'll want to do this step, where we add the terminal blocks for the speaker outputs. Otherwise you'd have to solder wires directly to the board which isn't suggested.
Remove the tape once you've checked your work
Power and Line In Terminal Blocks
There's also terminal blocks for Power and line-in. These are optional, you can use the DC jack and headphone jack but if you want to hard-wire in, use these instead of soldering directly to the board!