Electric Guitar Amp Settings Explained
Updated Nov 12, 2026 · By 
Jonah Mercer · Editorial policy
As an Amazon Associate I earn from qualifying purchases. Buying through the Amazon links on this page costs you nothing extra. Full disclosure
An electric guitar amp has a small set of controls: gain sets how hard the signal hits the amp, volume sets how loud it comes out, and treble, bass and mid shape the tone. Start with every knob near the middle, then move a single knob at a time and listen to what changes.
Start with gain and volume
Gain controls how much the guitar signal is pushed before the amp shapes it. Low gain keeps the sound clear, and high gain adds distortion and sustain. Set volume after gain: volume decides how loud the amp plays, while gain decides how much the signal is driven.
Shape the tone with treble, bass and mid
Treble, bass and mid each control one part of the sound. Treble lifts the high end, bass lifts the low end, and mid fills the middle. Move a single control at a time and listen for what changes, then leave the rest where they are.
Add effects after the basic tone
Reverb, delay and chorus sit after the basic tone, and each one changes the sound in its own way. Reverb adds space around the notes, delay repeats them, and chorus doubles them. Start with the effect level low, then raise it until you can hear the effect without losing the dry signal.
Use headphones for quiet playing
A headphone jack lets you play without the speaker sounding. Plug headphones into the jack marked for headphones, keep the volume low at first, and raise it slowly. The amp settings work the same way through headphones as they do through the speaker.
Save a setting you like
Once a setting sounds right, note where each knob sits so you can find it again. A phone photo of the panel works, and so does a short note with the knob positions. That way you can return to the same sound after trying something else.
What you need
Positive Grid Spark 2 50W Smart Guitar
A 50W amp with a 12 in speaker, an HD amp and effects library, a built-in looper, Spark AI, Bluetooth, and up to 12 hours with an optional battery.
- Power: 50 W, the most here
- Speaker size: 12 in, the largest here
- Built-in effects / amp models
- Bluetooth
Positive Grid Spark GO 5W Ultra-Portable Smart
A 5W ultra-portable amp with a 6 in speaker, 33 amps and 43 effects, Spark AI, Smart Jam, Bluetooth, and a USB-C battery that lasts up to 8 hours.
- Power: 5 W
- Speaker size: 6 in
- Built-in effects / amp models
- Bluetooth
Fender Champion II 25 Watt Electric Guitar
A 25W combo amp with an 8 in speaker, built-in reverb, delay and chorus, a headphone output, USB and aux in, and a 2 year warranty.
- Power: 25 W
- Speaker size: 8 in
- Built-in effects / amp models
- Headphone output
- 2 year warranty stated
CXLWZ Electric Guitar Amp 20 Watt Amplifier Portable
A 20W portable amp with a 6.5 in speaker, gain, bass, treble and volume knobs, a headphone jack, an aux input, and a 6.2 lb build with a handle.
- Power: 20 W
- Speaker size: 6.5 in
- Headphone output
These come from our ranked list Best Guitar Amp, which compares them spec by spec.
Frequently asked questions
What does the gain knob do?
Gain sets how hard the guitar signal hits the amp. Low gain keeps the sound clear, and high gain adds distortion. Set gain first, then use volume to set how loud the amp plays.
Why does my amp sound different at low volume?
An amp responds to how hard it is driven, and the settings interact with the volume. A setting that works at one volume can sound different at another, so adjust gain and tone again after you change the volume.
Do I need effects to get a good sound?
No. Gain, volume and the tone controls are enough on their own. Add reverb, delay or chorus only when you want that effect, and keep the level low enough that the dry signal stays clear.
What is the difference between gain and volume?
Gain drives the signal before the amp shapes it, and volume sets how loud the shaped signal plays. Turn gain up for more distortion, and turn volume up when you want the same sound louder.
Ranked guitar amps lists
More how-to guides
Product details come from each Amazon listing and can change. Check the listing before you buy.