There should be at least two knobs on the face of your guitar. One of these should be the gain. Turn this counter-clockwise to reduce the gain. You can keep the gain at three-fourths max or less on both your amp and guitar to prevent feedback. If you are still experiencing it, try turning it down even lower.
Another knob on the body of your guitar should control the volume. Turn this counter-clockwise to reduce your volume. Some guitars have numbers, 1-10 to designate the level of sound. If yours does, turn it to 8. If the knob on your guitar is not working, see if you can buy a replacement knob at a guitar store. If that doesn’t work, you may have to take it to get repaired.
All amps are different so you will most likely have to change the levels on your amplifier a couple of times to see what works best.
Even though your amplifier may not have a direct line to your input, it’s still possible that sound-waves are bouncing off reflective surfaces. Move things like tables and chairs to eliminate reflective surfaces that may be bouncing sound back into your input.
Pick up or roll your amplifier towards a wall and leave around 2-3 inches from the amp and the wall. Putting your amp on a carpet instead of a hardwood floor will reduce reverberations throughout the house.
Put the amplifier in front of you, pointing outwards. This will also help you if you are on stage and are experiencing a lot of feedback. Buying a longer cord will allow you the freedom to move around while you are playing.
Certain pedals are capable of creating more feedback. Overdrive effects for heavy metal or hardcore music have a greater chance of creating unintended feedback than a blues or jazz pedal because of the intended sound. Try unplugging your guitar from the pedal and plug your guitar directly into the amp. If there is no feedback, then the pedal is your culprit.
External or add-on equalizers may be more effective at eliminating your feedback. Depending on the quality of your amplifier, an external component may be better quality than the one that comes with your amp. Electric guitar frequency range is 80 Hz to about 1200 Hz. [5] X Research source You may have to test different frequencies for your specific guitar. Lower the frequency by turning the knob counter-clockwise within your range.
Turn the noise reduction knob clockwise to reduce the ambient sound and feedback from the guitar. Play with the threshold knob until you do not hear static from your amp. You have to find the level for your specific guitar and amp.
