Behringer Ultracoustic ACX1800 - 180-watt 2x8" Stereo Acoustic Combo

180-watt 2x8" 2-channel Acoustic Guitar Combo Amp
Behringer Ultracoustic ACX1800 - 180-watt 2x8
Behringer Ultracoustic ACX1800 - 180-watt 2x8
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Behringer Ultracoustic ACX1800 - 180-watt 2x8" Stereo Acoustic Combo
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This is One Feature Packed Amp!

Amplify your acoustic and control feedback at the same time with the Behringer Ultracoustic ACX1800 stereo acoustic guitar amplifier. Sporting 180 watts of power and two channels to cover all your input needs, the ACX1800 is a versatile amp at a great value. With complete connectivity for instruments, microphones, and line level sources, the ACX1800 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 ACX1800.

Behringer Ultracoustic ACX1800 Acoustic Combo Amp at a Glance:

  • Two channels

  • FBQ feedback indicators
  • Built-in FX
Two channels

Behringer's ACX1800 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 9-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 ACX1800, and LEDs 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, and you'll wrangle in that feedback in a flash.

Built-in FX

Behringer's ACX1800 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 ACX1800 Acoustic Combo Amp Features:

  • Feature-packed acoustic amp at a great price

  • 2-channel design supports virtually any input source
  • FBQ feedback indicators help fight feedback fast
  • Dual effects processors help you polish your sound
  • Dual 9-band graphic EQs for tone shaping
Amplify your acoustic guitar with the Behringer Ultracoustic ACX1800!

Additional Media

Guitar Amp Buying Guide
Ultracoustic ACX Series Acoustic Amp User Manual
Ultracoustic ACX1800 180-Watt 2 Channel Stereo Acoustic Amp Spec Sheet

Tech Specs

Number of Channels 2
Total Power 180W
Speakers 2 x 8" Bugera
Stereo Yes
Inputs 1 x Instrument, 1 x XLR, 1 x TRS, 2 x RCA
Outputs 2 x XLR (Line), 1 x 1/4" (Tuner)
Effects Yes (2 x Digital FX Processors, 16 Presets Each)
EQ 2 x 9-band (Graphic)
Feedback Control Yes
Footswitch I/O Yes
Height 16.8"
Width 20.7"
Depth 9.5"
Weight 40.6 lbs.
Manufacturer Part Number ACX1800

Customer Reviews

Based on 2 reviews
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Not As Loud As You Would Expect

I purchased the ACX1800 to be able to take only one amp to rehearsals for my harp and electric guitar. I had a rehearsal this week using the ACX1800 for the first time and below are my comments. To me, my Stratocaster sounded fine through the instrument channel so I wouldn’t hesitate recommending it for that use if someone needs vocals/harp and guitar through the same amp. It would not be my first choice though for a guitar only amp. The only external effects pedal I used at the rehearsal was the Boss OD-3 and I liked the sound of the reverb setting #1 on the amp for both my guitar and harp. I haven’t tried yet any of the other effects in a rehearsal setting. From the reviews, I had expected the amp not to be as loud as expected being rated at 180w. But I was still surprised in our 30’ x 30’ rehearsal room as I had the master up to 10 and my harp mic gain up to 8 and we don’t play very loud. I have been running my harp through a 40w tube amp and it is probably twice as loud as the ACX1800 through the mic channel. The harp sounded very full through the ACX1800. For my guitar I had the gain up to 5 to be loud enough without the pedal on. I will keep the amp for the convenience of one amp versus two for rehearsals but I won't use it for a performance unless I am doing a solo acoustic guitar and singing gig. This is my second Sweetwater order and I am very pleased with the excellent customer service including same day as ordered shipping and very timely updates on the whole process.
Music background: Been playing guitar and in local bands for 50 years

180 wishful thinking watts

The good: Once you get the amp dialed in and your preamp level set (adjust your guitar's ouput as you will overload the amp if you're not careful), this amp does a good job at amplifying an a/e guitar. Same goes for vocals. You could say it is very revealing in one's playing and singing. There are some handy features on offer such as a master volume to blend guitar, mic, and an MP3/CD source. Being able to plug in my iPod and play along makes learning new songs or playing along to a drum track fun. All input levels are available on the front which comes in handy. The included 9 band EQ is available on both channels and is okay and does its job but don't expect studio quality EQ here. Same goes for the compressor and digital effects. Overall they do the job but they are nothing to write home about. One solution is to use the effect sends and returns but that means more to carry to the gig. Plug your tuner input into the back tuner input and you have it available to you...once you hit the tuner button on the front panel. This also defeats the output. This is inconvenient unless you are sitting within a few feet of the amp and can reach over to hit the button every time you wanted to tune. It would have made sense to have an on/off button on the footswitch. Speaking of the footswitch, you can control the effects on or off for each channel, but without a light for each channel on the footswitch you have no idea if the effect is on or off until you start playing. Now for the bad: For some reason a watt coming from a solid state amp is not the same as a watt coming from a tube amp. I have many tube amps ranging in power from 5 watts to 50 watts. My Bugera V5 has an attenuator to take it from 5 watts all the way down to .1 watt. At 5 watts vol. 10 you'd think it wouldn't be able to be heard alongside the ACX1800 vol. 10. Nope. Not so. I have no meter to measure the output but there is no way this amp cranks out 180 watts. Checking the manual Behringer rates their speakers at 60 watts max power handling. Is that 60 watts for each speaker or 60 watts total for both? Either way, the claimed output would blow both speakers rather quickly. I'd think designing an amp I would want to throw in some room for error so to speak where my speakers would be able to handle the power. The funny thing is, the MP3/CD input is very loud. Maybe this is where the claimed 180 watts comes in? Build quality is another concern. The knobs have some wiggle room. They are not tightly screwed down so adjusting things doesn't give the impression of quality. So, this being my first acoustic amp it is okay and gets the job done. I wanted to practice singing while playing as that can be challenging to pull off. For a small room it would work fine. In a medium small room it might be okay as well but the output to PA on the back might be required. I'll bring it to practice next time for our singer and see if he can keep up with the rest of the band. I guess I'll keep the amp but there are more options out there...
See also: Combo Amps, Behringer, Behringer Guitar Combo Amps