The best beginner bass amp, and why a guitar amp will not do

The bass is the instrument that needs the amp

An unamplified electric guitar is quiet but perfectly practicable: the strings make enough sound for a beginner to hear their own fingers. An unamplified bass is not. The strings are thick and slack, they move a lot of air and very little of it reaches a human ear, and what the player hears is mostly a dull thud. A student practicing an unamplified bass cannot tell a clean note from a buzzing one, which is the single most important thing a beginner bass player has to learn.

So the amp is not an upgrade on this instrument. It is part of the instrument, and it should be in the budget from the start. Our beginner bass roundup says the same thing and sends readers here for the amp itself.

Why a guitar amp will not do

This is the first question every family asks, usually because there is already a small practice amp in the house from a guitar. The answer is no, and the reason is physical rather than a matter of taste.

A bass’s lowest string vibrates at roughly 41 Hz. Reproducing a note that low requires moving a lot of air, which requires a large speaker cone and the amplifier power to drive it. A guitar practice amp has neither: a 6-inch speaker and a few watts, voiced to make a guitar’s midrange sound good. Put a bass through it and two things happen. The sound is thin and unconvincing, because the fundamental note is simply not being produced. And the speaker is being asked to make excursions it was not built for, which over time loosens or tears the cone.

If it is the guitar amp you are actually shopping for, we have a separate page for that: beginner guitar amps. Nothing on this page is a sensible guitar purchase.

How we chose these

We have not built a rig around each of these amps, and we say so on every page — see how we research these picks. The criteria below come from published specifications, applied in this order.

How many watts does a beginner actually need?

Less than the internet suggests, and the reason the internet suggests more is that most of the advice is written for people playing with a drummer. A student in a bedroom is not.

The two sockets that matter more than the amp

If you remember one thing from this page, make it this. The headphone output and the aux input are worth more to a beginner than any difference in tone between the amps here.

The headphone output is what makes the bass practicable in a house with other people in it. Low frequencies travel through walls and floors far better than high ones, which is why a bass is the instrument neighbors complain about first. An amp with a headphone socket can be played silently at eleven at night; an amp without one cannot be played at all after the household goes to bed. For the wider version of this problem, see our guide to instruments for apartments.

The aux input is how bass players learn. The instrument is accompaniment: its job is to lock in with a drummer and outline the harmony, and neither of those can be practiced in silence. An aux socket lets a student put a song into the same speaker as their bass, at a balance they control. Doing it with a phone speaker across the room does not work, because the bass drowns the phone every time.

What a cheap bass amp does without

Below the amps here there is a tier of unbranded combos at roughly half the price, and it is worth knowing what the saving buys. Usually three things go: the published power figure becomes vague or optimistic, the speaker shrinks to 6 inches, and the warranty disappears. The last matters more than it sounds, because a practice amp lives on a bedroom floor and gets kicked.

The named amps on this page all publish wattage and speaker size, and two of them publish a two-year warranty on the listing. That is not a guarantee of better tone; it is a guarantee that the figures can be checked and the thing can be replaced. For a first instrument we think that is worth the difference. A student who outgrows a Rumble 15 can also sell it, which is not true of a nameless combo.

Which amp for which situation

Reading the controls, so the first hour is not wasted

A bass amp sounds bad out of the box more often than it sounds good, and a student who concludes the amp is cheap is usually looking at a tone control set to a factory position nobody chose. The controls are the same on every amp here, and they do three different jobs.

One thing worth telling a bass student early: the low notes sound bigger the closer the amp sits to a wall or a corner, because the room reinforces them. A practice amp pushed into a corner can sound impressively deep and make it impossible to hear whether a note is clean. Pull it out and lift it off the floor onto a chair, and the amp that seemed thin is the one telling the truth.

What else is in the basket

Three things get forgotten and all three stop the bass working on day one. A cable, because almost no amp includes one and a bass without a cable is silent. Headphones, if the plan depends on the headphone socket — any closed-back pair will do, and the ones in a drawer are fine to start. Somewhere for the bass to live, because a bass left leaning against a wall falls over, and a bass that has fallen over needs a setup. A bag with backpack straps and a stand are the two purchases that follow; our guitar case and gig bag guide covers the bass-specific bag, which is longer than a guitar bag for a reason.

Buying a bass amp used

A practice amp is one of the better used purchases in music, and one of the few places we would actively point a reader away from a new one. There is very little inside a small solid-state combo to fail, the market is full of them because most are sold on when a player either quits or joins a band, and the models here hold a recognizable name that makes a listing easy to value. A used Rumble at half price is a better purchase than a new no-name amp at the same money.

Four checks cover almost everything that goes wrong, and all four can be done in a driveway with the seller watching. Plug in and play every note on the lowest string slowly, listening for a rattle or a crackle that follows the note rather than the room — that is a damaged speaker, and it is the one fault that makes an amp not worth buying. Turn each tone control through its full travel and listen for scratching, which means dirty pots; it is usually cleanable but it is a bargaining point. Plug headphones in, because a dead headphone socket is common on an amp that has lived on a bedroom floor and it is the socket this page says matters most. And wiggle the input jack with a cable in it: a loose jack is a cheap repair and a sign of how the amp has been treated.

Two things not to worry about. Cosmetic damage — torn covering, a dented grille — has no bearing on how a practice amp sounds, and it is most of why used prices are low. And a missing footswitch or manual matters not at all on an amp this simple. What we would avoid is anything with a modeling screen that has gone dim or dead, because on an amp like the LT25 the presets are not reachable without it.