HUM A low tone caused by AC currents (60 Hz in the USA)
SOUNDS LIKE “mmmmm”, a low tone, a bit sharp of Bb
HISS Most often encountered by high gain players
SOUNDS LIKE “shhhhhhhhhh”, a high-pitched white noise
POWER SUPPLY NOISE Encountered by guitarists using power supplies to power their effects pedals
SOUNDS LIKE lots of different things (sorry) 🙁
DIGITAL NOISE (whine) Becoming more common as guitarists use more digital devices
SOUNDS LIKE many high pitched tones at once, a subtle screech
CABLE MICROPHONICS Every cable has it, to some degree
SOUNDS LIKE noise thru amp when touching or handling the cable
Reducing guitar noise can be tricky, but it is easy to boost the guitar signal to improve the signal-to-noise ratio (SNR), and some ways are better than others…
Do you need an expensive power supply to have a quiet rig? Strictly speaking, you do not. But it depends on many things…mainly you.
Guitar cables can cost $8, or they can cost $200. What’s the difference?