Kustom KXB100 Bass Combo Amplifier

90 out of 100. Incorporating 100+ ratings and reviews.

For the price, the Kustom KXB 100 gives you a lot of low-end oomph with its 100-watt power rating and big 15″ speaker.

This amp is more than enough for small to medium size venues, while its balanced line-out will allow you to go straight to the PA system for even more volume.

But it can also be used for practice with its aux-input and headphone-out.

This amp follows a somewhat common theme among bass amps, and that is a lack of any type of effects. But it does come with extended EQ for tuning the low and high mids.

Finally, this amp is meant to be pedalboard friendly with its effects loop.


  • 100-Watts
  • 15” Speaker
  • Controls: Gain, Master, Bass, Lo-Mid, Hi-Mid, Treble
  • AUX-In, Headphone-Out, Line-Out, Effects Loop
  • Weight: Not Specified


While it gets a lot of kudos for being loud, the Kustom KXB100 is also appreciated for its tone, which many describe as full sounding. There are plenty of reports of the amp doing well in medium size events, and there are some who are satisfied with the amp’s performance in rehearsals and recording. It is also described as sturdy, and many are convinced that it is well built.


The only downside for this amp is its bulk and weight, which should be expected given the size of the speakers.


With the Kustom KXB100, you can have a good sounding 100W 1×15″ bass amp combo at a very reasonable price.

Although this was previously on our recommended list, there are now more highly rated options available which you can see in our guide to The Best Combo Bass Amps.

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