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

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

Behringer

collapse expand iconDescription

The Behringer Ultratone K450FX keyboard amplifier packs impressive power and versatility into a compact format. With 45W delivered through a 10" woofer, this amp provides plenty of clean headroom and a full-range frequency response perfect for keyboards, drum machines, backing tracks or vocals. Onboard effects like reverb, delay and chorus add depth and dimension to your sound.

Shape Your Sound With the 5-Band EQ

Having granular control over your tone is crucial and the Ultratone K450FX gives you a 5-band EQ to sculpt your sound. Boost or cut bass, midrange and treble frequencies with precision to sit perfectly in the mix or stand out when soloing. The EQ makes it easy to adapt your tone for different instruments, players or venues.

Add Studio-Quality Effects

While its clean tone is impressive on its own, the Ultratone K450FX takes things further with pro-grade effects. Lush reverbs, tape-like delays and shimmering choruses can be dialed in with the dedicated knobs, placing your keyboard or vocals in a lush, three-dimensional space. 100 presets provide great starting points, letting you quickly summon epic arena verb or vintage analog echo.

Connect any Input Source

With its flexible I/O options, the Ultratone K450FX works with just about any instrument or audio source you need amplified. Plug in your keyboard, electronic drums or MP3 player using the 1/4" inputs. Sing through the XLR mic input, perfect for adding vocals on top of your keys. The headphone jack lets you practice silently late at night. RCA aux input enables connecting consumer audio devices.

Lightweight and Road-Ready

The Ultratone K450FX is easy to transport to gigs or band practice. Its durable construction and protective corners allow it to withstand life on the road. Powerful, versatile and reliable—the Ultratone K450FX is the perfect keyboard amplifier for performing musicians.

Behringer ULTRATONE K450FX Keyboard Amp/PA System
Behringer ULTRATONE K450FX Keyboard Amp/PA System
Behringer ULTRATONE K450FX Keyboard Amp/PA System

collapse expand iconFeatures

  • Powerful 10'' speaker for ultimate sound reproduction
  • Integrated 24-bit digital FX processor with 100 awesome presets including reverb, chorus, flanger, delay,
  • pitch shifter and various multi-effects
  • Revolutionary FBQ Feedback Detection System instantly reveals critical frequencies
  • Full 3-channel operation with separate Volume and FX Send per channel
  • Additional XLR mic input on Channel 1 for direct connection of dynamic microphones
  • Dedicated 5-band graphic EQ for awesome sound shaping
  • Line output for direct connection to your mixing console
  • Gain section with FX Return level and Master Volume
  • Subwoofer output for ultimate low-end power
  • CD input allows you to play along to your favorite music
  • Separate headphone output”perfect for quiet practicing
  • Integrated 35-mm pole socket for stand mounting and use as PA System
  • High-quality components and exceptionally rugged construction ensure long life
  • Conceived and designed by Behringer Germany

collapse expand iconSpecs

  • Inputs:
  • Line In 1 - 4 1/4" TS connector
  • Input impedance approx. 30 kOhm balanced
  • Input impedance approx. 20 kOhm unbalanced
  • CD In/Aux In RCA connector
  • Input impedance approx. 20 kOhm unbalanced
  • Mic In 1 XLR connector
  • Input impedance approx. 2 kOhm balanced
  • Outputs:
  • Headphones connector 1/4" TRS connector
  • Line Out 1/4" TS and XLR connector
  • Output impedance 1/4" TS connector: approx. 150 unbalanced
  • XLR connector: approx. 300 Ohm balanced
  • Output impedance approx. 150 Ohm unbalanced
  • Sub Out 1/4" TS connector
  • Output impedance approx. 150 Ohm unbalanced
  • EQ:
  • Type Graphic EQ with FBQ Feedback Detection
  • Frequency range 63 Hz / 250 Hz / 1 kHz / 3.5 kHz / 12 kHz
  • Bandwidth 2/3-oct.
  • Control range +12 to -12 dB
  • Digital Effects Processor:
  • Converters 24-bit sigma-delta, 64/128-times oversampling
  • Sampling rate 40 kHz
  • Loudspeaker:
  • Type 10'' Bugera speaker
  • Input impedance 4 _
  • Power:
  • General export model 120/230 V, 50 - 60 Hz
  • Power consumption approx. 75 Watts
  • 100 - 120 V:
  • 2.5 A H 250 V
  • 220 - 240 V:
  • 1.25 A H 250 V
  • Mains connection Standard IEC receptacle
  • Dimensions:
  • 16 1/2" x 17 3/8" x 11 3/4"
  • Weight: 32.19 lbs

collapse expand iconWarranty

1 year warranty. 3 year warranty if registered within 90 days of purchase.

collapse expand iconReviews

3.68

31 Reviews

54%

of respondents would recommend this to a friend

Ultratone K450FX Keyboard Amp

Most Liked Positive Review

5

Beringer 450fx

I am using this amp for keyboard & voice mixing. It does the job well. I have a Yahama PSRGX 76 keyboard and it works great. I do not use the special effects built into the amp because, I have them on the keyboard. The 5 band equalizer gives exelent sound shaping and makes the vocals sound great. I think this would also make a great guitar amp because of the special effects that are built into the amp.

VS

Most Liked Negative Review

1

Do not buy the Ultratone K450FX, hisses screams and pops

The Behringer K450FX I got used from Guitar Center in La Mesa California was great for about 10 minutes of keyboard playing, then it made horrifically loud electronic noises, painfully loud pops and hisses......so shocking I couldn't find the power switch fast enough to turn it off. I reconnected the cables, turned the volume down to barely audible and tested it for another few minutes until it happened again. I bought new cords and used with a guitar, CD player, headphones, and a Bass, and every time with great reliability it began the horrifically loud and painful noises. I understand many other owners are having the same issue. I think the longest time it has worked without screaming and making my ears hurt is maybe thirty minutes. Very disappointing and I would not recommend anyone consider this amplifier for purchase. Stay Away / Do Not Buy the Behringer K450FX amp!!!!!!!

Filters
Best Uses
  1. Performances7
  2. Home Studio5
  3. Outdoor Events / Games3
  4. Amateur Recording2
  5. Practice2
Cons
  1. Weak6
  2. Poor Sound Quality5
  3. None1
  4. Random screams of white noise, pops and hisses1
  5. 60hz hum1
Describe Yourself
  1. Professional Musician7
  2. Experienced5
Pros
  1. Easy To Use10
  2. Portable9
  3. Excellent Sound4
  4. Good Power Output4
  5. Warm / Comfy4

Reviewed by 31 customers

  • Useful in limited circumstances

    3

    submitted5 months ago

    byKirk`

    fromRockford, IL`

    As a primary gigging keyboard amp this could work in a small band, but for solo work such as piano or synth the sound is inadequate. I've used it in small nightclubs and find it tubby sounding and lacking in high end clarity for strings. As a personal monitor, it works fine.

  • So Close to Natural Acoustics

    5

    Verified BuyerVerified Buyer

    submitted8 months ago

    byAlthea

    fromKapolei, HI

    Submitted as part of a sweepstakes

    Our piano recitals venue don't have their own pianos. Renting acoustic pianos are costly. I have a digital piano but was never satisfied with the sound. This keyboard amplifier made a huge difference. So much closer to the natural piano tones I love.

  • Do not buy the Ultratone K450FX, hisses screams and pops

    1

    submitted4 years ago

    byBen D.

    fromChula Vista, CA

    The Behringer K450FX I got used from Guitar Center in La Mesa California was great for about 10 minutes of keyboard playing, then it made horrifically loud electronic noises, painfully loud pops and hisses......so shocking I couldn't find the power switch fast enough to turn it off. I reconnected the cables, turned the volume down to barely audible and tested it for another few minutes until it happened again. I bought new cords and used with a guitar, CD player, headphones, and a Bass, and every time with great reliability it began the horrifically loud and painful noises. I understand many other owners are having the same issue. I think the longest time it has worked without screaming and making my ears hurt is maybe thirty minutes. Very disappointing and I would not recommend anyone consider this amplifier for purchase. Stay Away / Do Not Buy the Behringer K450FX amp!!!!!!!

  • Do Not Buy!!!

    1

    submitted5 years ago

    byChris

    fromJoliet, IL

    I bought this before, had it replaced, same issue happened again. I have insurance this time but the store still haven't gotten back to me. Never buy this defective product!

  • Affordable & portable little amp

    4

    submitted5 years ago

    byJam4sam

    fromYork, PA

    Lightweight, portable and affordable little amplifier. With 3 channels & the EQ to help shape your sound, for the price, I believe this product is well worth it. The XLR input is a good feature as well. I'm used to playing through 200w amps, so to me, this is comparable to having a stage monitor at your feet. I was not too impressed with the tones I got from this amp, as it seemed to lack a bit in the mid & high ranges of the EQ, making the sound slightly muddy. I may have to work with that a bit to try to bring some richness to the mid range tone. Another factor contributing to this might be the lack of a tweeter speaker, as many keyboard amps do have. The FX are a nice option for a vocal mic & with this amp, you can adjust how much of the effect you want applied to each channel. Bottom line is this is a good, quality amp with many options, although not the best sounding, is still very good for the price.

  • Barely used it for 30 mins. Already grounded.

    1

    submitted6 years ago

    byChris

    fromJoliet, IL

    I tested this out with my Roland Go Keys and in 30 mins it's already grounded. I want my money back.

collapse expand iconQ&A

Have a question about this product? Our expert Gear Advisers have the answers.

  • submitted7 years ago

    asked byCathy

    fromRedding, Ca

    I just received the amp and cannot get the piano to come through the amp. It did for a few minutes now nothing.

    I just received the amp and cannot get the piano to come through the amp. It did for a few minutes now nothing.

    Open Reply - Kenneth
    We have a 45 day return period for remorse and defects.