Pricing and availability

We compare 600+ stores and found this item at 8 stores. Prices updated .

Sweetwater
4.0 (24)
$309.00
Guitar Center
3.5 (31)
$309.00
Amazon
4.0 (135)
$309.00
Reverb
5.0 (3)
$269.00 New
$193.46 Used
Musician's Friend
4.0 (20)
$309.00
Thomann
4.2 (46)
$193.00
Gear4Music
£181.75

Price History

Based on price data from 5 merchants for "Behringer Ultratone K450FX". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

The Behringer Ultratone K450FX is packed with features that make it the ultimate companion for musicians on the go, whether you're performing at intimate gigs or practicing at home. This 45W powerhouse delivers a robust sound through its 10" speaker, ensuring your keys, drum machines, and vocals come through with clarity and depth. Its compact size makes it easy to transport, yet doesn’t compromise on delivering a full-range frequency response.

Equipped with a 5-band EQ, the K450FX allows you to sculpt your sound with precision, offering control over bass, midrange, and treble frequencies. This makes it adaptable to different instruments and venues, ensuring your performance is always top-notch. The integrated 24-bit digital FX processor enhances your sound further, offering a variety of effects such as reverb, delay, and chorus, perfect for adding that extra touch to your live performances.

The K450FX features flexible input options, including three stereo channels, a dedicated XLR mic input, and RCA aux inputs, making it easy to connect various audio sources. Whether you're plugging in a keyboard, electronic drums, or an MP3 player, this amp has got you covered. The FBQ Feedback Detection System is an invaluable feature, instantly identifying and eliminating feedback frequencies, ensuring a smooth and hassle-free performance.

Key Features:

  • 45W power with a 10" woofer for full-range sound
  • 5-band EQ for precise sound shaping
  • Integrated 24-bit digital FX processor with reverb, delay, and chorus
  • FBQ Feedback Detection System to eliminate feedback
  • Three stereo channels and XLR mic input
  • RCA aux input and headphone output for versatile connectivity
  • Subwoofer output and line out for expanded sound options
  • Durable construction and compact design for portability

Product specs

Output Power 45W
Speaker Size 1 x 10"
Inputs 3 x 1/4", 1 x XLR, 1 x RCA (Stereo)
Outputs 2 x 1/4"
Height 17.375"
Width 16.5"
Depth 11.75"
Weight 32.19 lbs.

FAQs

What instruments can the Behringer Ultratone K450FX amplify?

The Behringer Ultratone K450FX is designed primarily for keyboards but can also handle vocals and other line-level instruments thanks to its versatile input options, including XLR and RCA connections.

Does the Behringer Ultratone K450FX have built-in effects?

Yes, the Behringer Ultratone K450FX features built-in digital effects, including reverb, chorus, and delay, allowing you to enhance your sound directly from the amp.

How portable is the Behringer Ultratone K450FX for gigging musicians?

Weighing 32.19 lbs and featuring a compact design, the Behringer Ultratone K450FX is relatively portable, making it suitable for musicians who need to transport their gear to gigs and rehearsals.

Can the Behringer Ultratone K450FX be used as a PA system?

Yes, the Behringer Ultratone K450FX can function as a small PA system, thanks to its multiple input options and built-in mixer capabilities, making it ideal for small venues or practice sessions.

What is the power output of the Behringer Ultratone K450FX?

The Behringer Ultratone K450FX delivers 45 watts of power, which is suitable for practice sessions and small to medium-sized venues.

Behringer

Behringer

ULTRATONE K450FX Ultra-Flexible 45-Watt 3-Channel PA System / Keyboard Amplifier

Video thumbnail for ULTRATONE K450FX Ultra-Flexible 45-Watt 3-Channel PA System / Keyboard Amplifier by Behringer

ULTRATONE K450FX Ultra-Flexible 45-Watt 3-Channel PA System / Keyboard Amplifier

Behringer

Behringer

Video thumbnail for Behringer Ultratone K450FX review by vincent ryan borres

Behringer Ultratone K450FX review

vincent ryan borres

vincent ryan borres

Video thumbnail for Roland JUNO-DS88 88-key Synthesizer & Behringer Ultratone K450FX Gear Set Up by Ryan Joseph Long

Roland JUNO-DS88 88-key Synthesizer & Behringer Ultratone K450FX Gear Set Up

Ryan Joseph Long

Ryan Joseph Long

Video thumbnail for Behringer Ultratone K450FX - DJkit.com by djkit®

Behringer Ultratone K450FX - DJkit.com

djkit®

djkit®

Reviews

PROS

  • Versatile use for keyboards, guitar, vocals, and more

  • Affordable without compromising on quality

  • Warm sound with crisp high ends due to built-in EQ per channel

  • Suitable for various applications, including as a playback speaker

CONS

  • Not loud enough for more than moderate volumes

  • Outer covering attracts pet hair and dust

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Behringer Ultratone K450FX.

Comparisons

  • Behringer K450FX is often compared to powered PA speakers like the JBL 10” for better range and versatility, especially in live settings.

    Source
  • The Behringer K450FX is heavier than the Vox VX50KB, noted as a consideration for users prioritizing portability.

    Source

User experience

  • Some users report the Behringer K450FX breaking within a few months, raising concerns about its long-term reliability.

    Source
  • Owners have noted that the amp can emit a loud, bassy hum similar to feedback, regardless of whether an instrument is plugged in.

    Source

Use cases and applications

  • The Behringer K450FX's three-input feature is appreciated for simple setups without needing an external mixer, suitable for buskers or home use.

    Source

Features and functionality

  • The onboard effects, such as reverb, are highlighted, though some users find them non-essential.

    Source

Build quality

  • Reports indicate a recurring hum issue potentially linked to cheap internal components, with some owners experiencing this problem after only a few months of use.

    Source

4.0 out of 5

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