your amp might not be getting enough power. its best an amp go direct into a socket. not share with others. if you must share the socket, minimise the number of items.
hmmm, okay second option, your effects IF any. also, dirty connectors, old old and dying cables, pickups, faulty soldering theres alot. you got to keep troubleshooting my man.
maybe that is because of radio interference? try moving the guitar around (while the amp is on of coz), and see if the noise become less/worse. also try to play at different time of the day to see if the noise is always there.
new guitars dont mean perfect soldering unfortunately. ive ever had to resolder a new pedal. anything's possible bro. just do certain tests. perhaps using another guitar. as for cable woming with guitar, upgrade that. those that are packaged arent good in most cases. maybe get horizon cables form yamaha. planet waves or something. your preference.
wah bro, you jump to this thread also. its a suggestion lah. but i dont use fender cables. horizon for me. plus after my planet waves konked out and everytime it does, it means -1 foot from the length. damn.
>.< the first post in the Gear Guitar forum is a sticky for a reason.
The one on how to change 2 pin plug to 3 pin plug. The power cable of new amps will confirm be 2 pins. So read the sticky and change it to 3 pins. Ah and it's called grounding when you do that. The extra pin grounds the amp. And so do your hands when you touch the strings.