Behringer Ultracoustic ACX450 - 45-watt 1x8" 2-channel Acoustic Combo

45-watt 1x8" 2-channel Acoustic Guitar Combo Amp
Behringer Ultracoustic ACX450 - 45-watt 1x8
Behringer Ultracoustic ACX450 - 45-watt 1x8
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Behringer Ultracoustic ACX450 - 45-watt 1x8" 2-channel Acoustic Combo
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This Little Amp is a Big Value

Amplify your acoustic and control feedback at the same time with the Behringer Ultracoustic ACX450 stereo acoustic guitar amplifier. Sporting 45 watts of power and two channels to cover all your input needs, the ACX450 is a versatile amp at a great value. With complete connectivity for instruments, microphones, and line-level sources, the ACX450 is a do-it-all amp. If you need an acoustic amp with a lot of features that won't break the bank, check out the Behringer Ultracoustic ACX450.

Behringer Ultracoustic ACX450 Acoustic Combo Amp at a Glance:

  • Two channels

  • FBQ feedback indicators
  • Built-in FX
Two Channels:

Behringer's ACX450 is a true dual-channel stereo amplifier. Channel One is for your acoustic guitar, while Channel Two gives you inputs for either a microphone or a line-level source. Both channels feature a 5-band graphic EQ for tone shaping. On top of that, each EQ features FBQ feedback indication to help you terminate feedback quickly.

FBQ Feedback Indicators:

Engage the FBQ control on the ACX450, and LED's on the graphic EQ come to life. The LED's fluctuate in intensity, in response to the input signal. If feedback occurs, just pull down the fader that is glowing brightest - you'll wrangle in that feedback in a flash.

Built-in FX:

Behringer's ACX450 gives you two separate digital FX processors, one for each channel. Each has 16 presets including reverb, chorus, delay, and more. You can even tailor the chosen effect to your style with the Parameter dial.

Behringer Ultracoustic ACX450 Acoustic Combo Amp Features:

  • Feature-packed acoustic amp at a great price

  • Two channel design supports virtually any input source
  • FBQ feedback indicators help fight feedback fast
  • Dual effects processors help you polish your sound
  • Dual 5-band graphic EQs for tone shaping
Amplify your acoustic guitar with the Behringer Ultracoustic ACX450!

Additional Media

Acoustic Guitar Amp Buying Guide
Guitar Amp Buying Guide
Ultracoustic ACX Series Acoustic Amp User Manual

Tech Specs

Number of Channels 2
Total Power 45W
Speakers 8" Bugera
Inputs 1 x Instrument, 1 x XLR, 1 x TRS
Effects 2 x Digital FX Processors, 16 Presets Each
EQ 2 x 5-band Graphic
Feedback Control Yes
Footswitch I/O Yes
Height 16.3"
Width 17.9"
Depth 8.3"
Weight 29.1 lbs.
Manufacturer Part Number ACX450

Customer Reviews

Based on 13 reviews
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Ultracoustic is ultra

Great amp! Just played in a mid-sized church and it filled the room. Beautifully reproduces my Ovation acoustic-electric on one channel and a vocalist on the other. Very good controls for the graphic equalizers which really make a big difference. I haven't done much with the effects other than to add reverb and that works well. All in all, this amp is well worth the price. I love the look as well. It's a little heavy to be easily portable but not so weighty that you never want to take it anywhere. Get it, you'll love it.
Music background: Not amatuer, not pro

This amp is a 10, nothing less.

Got mine today, and setting it up took me a just a few minutes. Using a Shure SM58 for vocals and acoustic harmonica works fantastic with the ACX450. My amp family is all tube amps from Vox and Ampeg. So this as my first experience with this Ultracoustic ACX450 is being truly overwhelming, so to say. I expected much less for this low-end price and being rewarded by such a high quality product is great indeed. Sure, I could have spent a 4 digit amount but I kept to my budget and for this Behringer amp the price-to-value ratio is unbeaten, at least to my knowledge. Crisp, clean sound, reverb 3 and 4 sound organic and the looks of the amp are eye-catching. Zero feedback, even when I dialed in a 9 on the GAIN. The modulation and delay section is another option which actually does not fit too well with my voice and harmonica tunes. However, I instantly decided to skip all this modulation which is no problem at all for my performance as a singer/acoustic harp player. I will figure if it makes sense to use this modulation/delay on board effects when plugging in other instruments. For now, everything works out at its best. I will use this amp for rehearsals in my studio and on smaller stages. Last but not least, Sweetwater Music and their sales engineer Phil Potts provided a top notch service, like always. Thanks guys, the world of acoustic music starts to shine!
Music background: Hobbyist with a steep learning curve

Tube like tone!

I have owned this amplifier for over a year now and continue to be amazed at the wonderful tones. The 8 inch speaker has wonderful voicing. Now only does this sound great with acoustic guitars, but try a hollow body or semi-hollow body through it. My Casino Coupe truly sounds like it is plugged into a tube amp through this amplifier. I also use vocals on this amp. You can tweek your voice with the controls and get fairly loud and good vocals . I hate to admit it, but the clean tone on this amp sounds much better than my Line 6 Spider Jam using an electric guitar, and that Spider Jam has to be among the best modeling amps. How does Behringer do such quality for such low prices? Been playing for 40 years. Go try one and see what you think.
Music background: Have played in a band and recorded.

Great Fiddle and Vocal Amp

Had this amp since 08/2011. Plug in my Realist acoustic /electric violin and Shure microphone and let it rip! I built a small plywood wedge (Nashville style) to set the amp on. For bar gigs, wedding parties, etc I tip it towards me and it fills the room.Put it behind me if I need more volume for larger spaces. The instrument EQ sliders set the violin sound I want, and I add in a little reverb. I've been gigging out for 30+ years and this is a perfect rig for me. I sing and my accompanist is either an un-amped electric piano or acoustic guitar thru' an old Laney acoustic amp. This amplifier is still very quiet (no hum) and has traveled all over Maine in the back of my jeep. Fiddle goes directly into amp, no need for stomp boxes or separate EQ. Pretty simple set up: amp, wedge, mic stand, cables = one trip in and out of the venue! Bottom line, this amp makes your violin sound exactly like a violin, is simple and ideal for my use.

Great little amp!

Great little amp for any singer songwriter for small venues and practice . I'm totally impressed and have had mine for 8 years now . Good effects foot switch even an aux input for break music . I use it when I don't need the power and performance of my Marshal AS100D soloist system which in my opinion is the gold standard for an acoustic combo amp. For the money this little behringer can't be beat !
See also: Acoustic Guitar Amplifiers, Behringer, Behringer Acoustic Guitar Amps