Assembled LJM GC LM3886TF Power Amplifier Board with Speaker Protection

today we're looking at this power supply kit from ebay claim to fame is that it has dual outputs of plus and minus voltage and it also has speaker protection circuitry here i must say the kit took a very long time to get here but it was extremely well packed and nothing appears to be damaged or broken in any way for some reason there are three components pre-soldered on the board now i don't really know why because i can understand if they were a very small surface mount or something but there are two resistors pre-pre-soldered and one diode this is the reverse of the board and there's not much i can say about it except it's been designed by ljm who seems to be responsible for a lot of the better kits available from china the board is very well made and good areas of copper where it needs to be these are the main smoothing capacitors not sure the brand but they're 50 volt 6800 microfara