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Behringer Ultracoustic ACX450 Acoustic Guitar Amplifier   (Used)

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SKU 
#480306005000054
See All Behringer Acoustic Combo Guitar Amplifiers
  • Ships Internationally
Behringer

True and natural acoustic guitar sound.

The Behringer ACX450 amp is a 45W, 2-channel amplifier that features an original 8" speaker for true acoustic fidelity. It includes 2 independent FX processors and an ultra-musical, 5-band graphic EQ for each channel plus the revolutionary FBQ Feedback Detection system to reduce feedback in an instant. The guitar amp also comes with a dual footswitch FS112.

Features

  • Powerful 45-Watt, 2-channel amplifier for acoustic instruments and vocals
  • Original 8" dual-cone speaker for ultimate sound reproduction
  • 2 integrated, 24-bit digital FX processors each with 16 awesome effects programs including reverb, modulation, delay, and various effects combinations
  • Revolutionary FBQ Feedback Detection System instantly reveals critical frequencies
  • Dedicated instrument and microphone channels with separate Gain and FX controls
  • Individual 5-band graphic EQ on each channel for awesome sound shaping
  • CD input allows you to play along to your favorite music
  • Dual footswitch FS112 for FX 1 & 2 bypass included
  • High-quality components and exceptionally rugged construction ensure long life

Call or click today to order!

 

Ultracoustic ACX450 Acoustic Guitar Amplifier Specifications:

  • 17.9"W x 16.3"H x 8.3"D
  • 21.9 lbs.
Customer Reviews
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Review Snapshot®

by PowerReviews
BehringerUltracoustic ACX450 Acoustic Guitar Amplifier
 
4.7

(based on 33 reviews)

Ratings Distribution

  • 5 Stars

     

    (27)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

93%

of respondents would recommend this to a friend.

Pros

  • Excellent sound (10)
  • Warm / comfy (10)
  • Easy to use (9)
  • Portable (9)
  • Good power output (5)

Cons

  • Limited functions (3)

Best Uses

  • Performances (10)
  • Home studio (9)
  • Outdoor events / games (9)
  • Amateur recording (7)
    • Reviewer Profile:
    • Experienced (8), Professional musician (4)

Most Liked Positive Review

 

A lot for the price but some limitations

After reading all the reviews, I decided to take a chance on this amp mainly for playing/singing solo gigs and trying to downsize my rig. It arrived today and I'll give my honest...Read complete review

After reading all the reviews, I decided to take a chance on this amp mainly for playing/singing solo gigs and trying to downsize my rig. It arrived today and I'll give my honest critique (pre-gig).

PRICE: I'm sure there is nothing better in this range, and most people will be satisfied with this purchase.

USE: If you are a professional accustomed to using higher end equipment, this amp will fall short of your expectations unless you employ some additional tweaking. See below for some suggestions.

CONSTRUCTION: Cabinet (closed back, a big advantage for both durability and direction of sound) is very robust and solid, However, it does make this amp weigh more than some would like it to given its small footprint. You definitely want a lightweight hand truck for this and your other accessories.

Front control panel controls are delicate. I would definitely get a custom cover made to protect the fragile 5 EQ band adjusters and knobs for level and click dial-up effects.

Front grill is velcro-ed to the cabinet rather than 4 corner screws- but that didn't seem to be an issue as far as the quality of the seal or any unwanted vibrations.

Only cosmetic criticism is that the back seams of the tan laminated material are not that tight or flush, so you may want to find a matching color to permanently tape them before you start banging it around.

SOUND: This is of course very personal and all depends on the guitar and mike you are using, and the kinds of venues you are playing.

In general, the pre amp stage of the amp is weak for both guitar and mike inputs.

If your acoustic-electric guitar does NOT have on-board controls for boosting overall level (and maybe filling in some of the frequency band gaps not covered by the graphic EQ), then I recommend some kind of pre-amp box like a Tech 21 Paradriver. Even if you don't click it ON to activate the EQ settings, the signal going to the amp is boosted significantly (at least 20db) and will take better advantage of the amp's power, which is considerable. If you DO click and activate the Paradriver EQ, you at least have the ability to dial in some tube warmth and use the parametric midrange modestly.

EQ: The graphic 5-band has its limitations. The range of each band is pretty narrow I think. For both the guitar and mike channels, I found the 12k frequency band virtually useless since there is no tweeter in this cabinet.

So for vocals, if you are using an SM-58 or equivalent workhorse, even pinning the 3.5k and 12k bands will not give you the crispness you are hoping to get from this essentially guitar amp. Still acceptable for small restaurant gigs but not PA quality. The 1k band should stay flat, it is very honky when boosted. The two lower bands could be boosted a bit for the lows, which seem to be no problem for this amp.

So I would try to use/test out a better mike that has a better high frequency response and see if it makes a difference in the high frequencies. BTW, you may want to invest in a simple level booster for the mic preamp stage as well. I used a 1/4" transformer into the same Tech 21 paradriver and it boosted the signal nicely and gave the appearance of a better high end response. Without a boost, I found that the level control at 5-7 was enough volume and it didn't break up.

Guitar sound of course will vary greatly. See above for suggestions.

The anti-feedback buttons for each channel didn't seem to have any effect- this applies both to high end squeal on the mike and midrange wolf tones on the guitar which really need a notch filter to level out. However, I found if you sang and played facing AWAY from the amp and somewhat to the side, both the mike feedback and wolf tones seemed to diminish significantly.

For an 8 inch speaker and small closed-back cabinet, I found the throw of the speaker to be direct but still with some spread to it. I wouldn't call the sound warm, but it's pretty clear. The lack of high end is less of an issue for guitar since most people go for a more natural, less clinky sound. Again, this is where your onboard guitar EQ or outboard EQ device can make a difference.

CONTROLS: Again, they are all delicate and I would very slow and careful when clicking between effects choices. As far as REVERB goes, setting #2 is a small-medium room which works well for the guitar but makes the voice sound boxy and mid-range dominant. I would go with reverb #3 for the voice (large hall) but use just a trace of it, like between 1-2. The other effects like delay seem to be just fine but that's not a need of mine. If it was, I would use an external multi-effects unit that has all those secondary effects.

Probably the biggest drawback/cutback on controls is the LACK OF A LINE OUT (phone jack and/or xlr).

If you want to patch this into a larger PA system, you're going to have to bring an extra mike for the amp. This could have easily been incorporated on the back mini-panel, alongside the CD stereo RCA ins and level control- a nice touch, especially if you are used to patching in your iPod during breaks. or those who use drum machines and other playalong tracks.

I will be using this on a trio gig tomorrow (with bass and drums in a small auditorium, no PA) to give this a real test. If it suffices for that then I'm sure I'll find a way to make it work for solo and duo gigs as an alternative to taking separate cabinet and head.

In summary, Behringer continues to make quality products for very reasonable cost- and this amp is certainly no exception. But it is far from ideal for the discerning musician who wants the best sound possible. If they read reviews on this site dating back over 5 years citing its shortcomings, maybe this could be a killer amp instead of an adequate one. I know at least the detachable power cable was one improvement they made.

The other issue, which is a marketing one, is that this amp is nowhere to be found in-store at GC or any other retail outlet. So you are basically flying blind when you order it. MF does have a great returns policy so if you don't think this amp will work for you, sending it back is not a hassle and you don't pay the return shipping.

VS

Most Liked Negative Review

 

ACX 450

This amp is good for practice and maybe even a small front porch gigs, but OMHO it seems like something high end I would buy at Target or Sears.The sound is good and clear,...Read complete review

This amp is good for practice and maybe even a small front porch gigs, but OMHO it seems like something high end I would buy at Target or Sears.The sound is good and clear, but the mic section had too much feed back (om2 from Audix).The speaker uses what we used to call a "whizzer" cone around the dust cap of the larger speaker cone. So the same voice coil is used for both highs and lows. The high end cant keep up with the lows at higher volume.I prefer a true coaxal speaker which look like the car speakers displayed at Walmart. Two seperate cones with the tweeter centered in front of the woofer, two seperate magnets, and separate voice coil.The effects sound generic and fabricated. At low volume, it sounds really sweet though, I'll give it that.Overall, sweetsounding, clear, crisp bedroom amp, great first amp for the kiddos!

Reviewed by 33 customers

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Displaying reviews 1-10

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(1 of 1 customers found this review helpful)

 
1.0

Very disappointing

By Eddie

from Scottsdale AZ

About Me Professional Musician

Pros

  • Good Warmth
  • Portable
  • Powerful

Cons

  • Limited Functions

Best Uses

  • Events
  • Home Studio
  • Performances

Comments about Behringer Ultracoustic ACX450 Acoustic Guitar Amplifier:

Behringer really missed the mark with this one. Don't buy it. It has good power and a good sound but it is cheaply made. The EQ sliders are made of thin pieces of tin. They break off with normal wear and tear from loading and unloading. Until they fix this issue I would not recommend this amp.

Comment on this review

(5 of 5 customers found this review helpful)

 
4.0

A lot for the price but some limitations

By Alanyari

from Queens, NY

About Me Professional Musician

Pros

  • Acceptable Sound Quality
  • Easy To Use
  • Portable

Cons

  • Limited Functions
  • No Line Out Or Phones Out

Best Uses

  • Events
  • Live Soloduo Gigs
  • Performances

Comments about Behringer Ultracoustic ACX450 Acoustic Guitar Amplifier:

After reading all the reviews, I decided to take a chance on this amp mainly for playing/singing solo gigs and trying to downsize my rig. It arrived today and I'll give my honest critique (pre-gig).

PRICE: I'm sure there is nothing better in this range, and most people will be satisfied with this purchase.

USE: If you are a professional accustomed to using higher end equipment, this amp will fall short of your expectations unless you employ some additional tweaking. See below for some suggestions.

CONSTRUCTION: Cabinet (closed back, a big advantage for both durability and direction of sound) is very robust and solid, However, it does make this amp weigh more than some would like it to given its small footprint. You definitely want a lightweight hand truck for this and your other accessories.

Front control panel controls are delicate. I would definitely get a custom cover made to protect the fragile 5 EQ band adjusters and knobs for level and click dial-up effects.

Front grill is velcro-ed to the cabinet rather than 4 corner screws- but that didn't seem to be an issue as far as the quality of the seal or any unwanted vibrations.

Only cosmetic criticism is that the back seams of the tan laminated material are not that tight or flush, so you may want to find a matching color to permanently tape them before you start banging it around.

SOUND: This is of course very personal and all depends on the guitar and mike you are using, and the kinds of venues you are playing.

In general, the pre amp stage of the amp is weak for both guitar and mike inputs.

If your acoustic-electric guitar does NOT have on-board controls for boosting overall level (and maybe filling in some of the frequency band gaps not covered by the graphic EQ), then I recommend some kind of pre-amp box like a Tech 21 Paradriver. Even if you don't click it ON to activate the EQ settings, the signal going to the amp is boosted significantly (at least 20db) and will take better advantage of the amp's power, which is considerable. If you DO click and activate the Paradriver EQ, you at least have the ability to dial in some tube warmth and use the parametric midrange modestly.

EQ: The graphic 5-band has its limitations. The range of each band is pretty narrow I think. For both the guitar and mike channels, I found the 12k frequency band virtually useless since there is no tweeter in this cabinet.

So for vocals, if you are using an SM-58 or equivalent workhorse, even pinning the 3.5k and 12k bands will not give you the crispness you are hoping to get from this essentially guitar amp. Still acceptable for small restaurant gigs but not PA quality. The 1k band should stay flat, it is very honky when boosted. The two lower bands could be boosted a bit for the lows, which seem to be no problem for this amp.

So I would try to use/test out a better mike that has a better high frequency response and see if it makes a difference in the high frequencies. BTW, you may want to invest in a simple level booster for the mic preamp stage as well. I used a 1/4" transformer into the same Tech 21 paradriver and it boosted the signal nicely and gave the appearance of a better high end response. Without a boost, I found that the level control at 5-7 was enough volume and it didn't break up.

Guitar sound of course will vary greatly. See above for suggestions.

The anti-feedback buttons for each channel didn't seem to have any effect- this applies both to high end squeal on the mike and midrange wolf tones on the guitar which really need a notch filter to level out. However, I found if you sang and played facing AWAY from the amp and somewhat to the side, both the mike feedback and wolf tones seemed to diminish significantly.

For an 8 inch speaker and small closed-back cabinet, I found the throw of the speaker to be direct but still with some spread to it. I wouldn't call the sound warm, but it's pretty clear. The lack of high end is less of an issue for guitar since most people go for a more natural, less clinky sound. Again, this is where your onboard guitar EQ or outboard EQ device can make a difference.

CONTROLS: Again, they are all delicate and I would very slow and careful when clicking between effects choices. As far as REVERB goes, setting #2 is a small-medium room which works well for the guitar but makes the voice sound boxy and mid-range dominant. I would go with reverb #3 for the voice (large hall) but use just a trace of it, like between 1-2. The other effects like delay seem to be just fine but that's not a need of mine. If it was, I would use an external multi-effects unit that has all those secondary effects.

Probably the biggest drawback/cutback on controls is the LACK OF A LINE OUT (phone jack and/or xlr).

If you want to patch this into a larger PA system, you're going to have to bring an extra mike for the amp. This could have easily been incorporated on the back mini-panel, alongside the CD stereo RCA ins and level control- a nice touch, especially if you are used to patching in your iPod during breaks. or those who use drum machines and other playalong tracks.

I will be using this on a trio gig tomorrow (with bass and drums in a small auditorium, no PA) to give this a real test. If it suffices for that then I'm sure I'll find a way to make it work for solo and duo gigs as an alternative to taking separate cabinet and head.

In summary, Behringer continues to make quality products for very reasonable cost- and this amp is certainly no exception. But it is far from ideal for the discerning musician who wants the best sound possible. If they read reviews on this site dating back over 5 years citing its shortcomings, maybe this could be a killer amp instead of an adequate one. I know at least the detachable power cable was one improvement they made.

The other issue, which is a marketing one, is that this amp is nowhere to be found in-store at GC or any other retail outlet. So you are basically flying blind when you order it. MF does have a great returns policy so if you don't think this amp will work for you, sending it back is not a hassle and you don't pay the return shipping.

Comment on this review

(2 of 2 customers found this review helpful)

 
5.0

Excellent in every way

By Jimmy Mack

from Virginia Beach

About Me Experienced

Ask me a question

Pros

  • Attention To Detail
  • Easy To Operate
  • Excellent Sound
  • Foot Switch Included
  • Good Warmth
  • Portable
  • Useful Effects

Cons

    Best Uses

    • Amateur Recording
    • Events
    • Home Studio
    • Performances

    Comments about Behringer Ultracoustic ACX450 Acoustic Guitar Amplifier:

    Excellently designed amp for smaller venues or home use. Can of course be miked for larger ones. The effects are very useful and easy. T ried a vew effects for acoustinc and they were overkill or dificult to figure out (like SZoom A3). This amp you don't need any exteral eefects--they are builting but engineered to enhace acoustic sound and not dramatically alter it. And there are dynamic controls for them. Foot swtich included is great benefit. Solid buy for money.

    Comment on this review

    (2 of 2 customers found this review helpful)

     
    5.0

    It's a great deal!

    By GeneO

    from Florence, S.C.

    About Me Experienced

    Verified Buyer

    Pros

    • Excellent Sound
    • Good Warmth
    • Portable

    Cons

      Best Uses

      • Amateur Recording
      • Events
      • Home Studio
      • Performances

      Comments about Behringer Ultracoustic ACX450 Acoustic Guitar Amplifier:

      I perchased the Behringer Ultracoustic ACX450 Acoustic Guitar Amplifier on 9/12/13 and I am totally amazed with its performance. I am convinced that for the price I could not find anything that can match it. I've used it for practice as well as twice in a restaurant setting with other musicians. My Alvarez AD62SC acoustic guitar sounds awesome through it. I set the amp gain on five and the guitar on the same and found that I had more than enough power. I am still experimenting with the effects and have used the chorus, delay and reverb settings thus far. I have only use a microphone during practices to try it out. With the amp set on three and the guitar set on four with the microphone set on three, it held its own. Not only am I impressed, so are the musicians I play with. I was a skeptic even after reading all the positive reviews. I have never written a review before on anything I have purchased. I felt that this warranted me doing so. I would definitely recommend this amp to any musician looking for that bang for their buck.

      Comment on this review

      (1 of 1 customers found this review helpful)

       
      5.0

      Behringer acoustic amp with effects

      By wilfredo rodriguez the guitarman

      from philly pa

      About Me Professional Musician

      Ask me a question

      Verified Buyer

      Pros

      • Easy To Use
      • Excellent Sound
      • Good Warmth
      • Portable
      • Powerful

      Cons

      • None

      Best Uses

      • Amateur Recording
      • Events
      • Home Studio
      • Performances
      • Professional Recording

      Comments about Behringer Ultracoustic ACX450 Acoustic Guitar Amplifier:

      This amp is awesome this the second one I own I sold the first and had to buy the another the sound it produces is great for the size if your looking for a inexpensive amp this is the to buy.....

      Comment on this review

      (1 of 2 customers found this review helpful)

       
      4.0

      Good Solid Sound w/ OK Effects

      By Atanu Sarkar

      from Bloomington, IL

      About Me Novice

      Ask me a question

      Pros

      • Excellent Sound
      • Good Warmth
      • Ind Effects Controller
      • Microphone Input
      • Powerful

      Cons

      • Too heavy

      Best Uses

      • Amateur Recording
      • Events
      • Home Studio

      Comments about Behringer Ultracoustic ACX450 Acoustic Guitar Amplifier:

      This amp has really loud sound, good bass. From what I could tell, the sound was good. I could only crank up the volume halfway up, but that was loud enough for an apartment. Will try it in a larger setting sometime. The effects are ok. The Reverb is good, and the delay works, and causes an interesting sound. I haven't tried out the Microphone channel yet. One of the biggest reasons I chose this amp over the Peavey E208 was because this had individual Effects controller for each channel, so I can sing using Reverb on one channel and play the guitar through the other using some other effect if I want to. That is important to me. The Amp is heavy, nothing that will break your back but is not very easy to haul around just like that. It is quite a good looking amp. The wood-finished skin sits nicely on the front but on the back is not glued all that well. It is not really such a big deal that I should consider returning it, but I will try to superglue it myself. I would have preferred a metal grill at the front, but the cloth mesh is not that bad either. It kind of gives it a classic appeal. I have not tried to play around with the Feedback Detection system on this yet. Also, I have not tried to use a Microphone with it. Since this as an XLR input, I need to find something which will match. Ofcourse, you can also use a regular quarter inch jack for the Microphone input too. Just thought that the power cord could have been a little longer. For such a heavy Amp, I dont want to haul it around till I find a power point. Rather I would prefer if I can just sit it down and extend the power cord to a socket. BTW, it also comes with a foot pedal for effects, haven't really given it a try yet, but i can't foresee myself using that too much, but it is good to have i guess.

      Comment on this review

      (2 of 2 customers found this review helpful)

       
      5.0

      Three Years In

      By Foddershock

      from Clintwood, VA.

      About Me Professional Musician

      Ask me a question

      Pros

      • Excellent Sound

      Cons

        Best Uses

        • Events
        • Home Studio
        • Performances

        Comments about Behringer Ultracoustic ACX450 Acoustic Guitar Amplifier:

        After three years in...this amp has performed flawlessly. Played lots of shows with it, both indoor and out. It has always been my go-to amp for practice and performing. Now the sad part. Out of the blue I turned it on one snowy morning, and nothing happened. Pulled the fuse out and it was blown. Ordered new fuses and the same thing. I'm taking it to a repair shop to get a verdict. If it's relatively inexpensive to correct, I'll have it repaired. If not, I plan on replacing it with a new one. I bought the Fishman Mini-Box 60 watt, and like it, which sounds great and is pretty powerful in it's own right...but it's just not the same. The Fishman has far less diversity feature wise, but lots more umph to it. I love the diversity of the Behringer, and miss it sorely. Even with the problem I had out of this amp, I'd still highly recommend it. Just glad it didn't happen onstage.

        Comment on this review

        (1 of 1 customers found this review helpful)

         
        5.0

        Just What I was Looking For.

        By Buddy

        from Waco, TX

        About Me Experienced

        Verified Buyer

        Pros

        • Easy To Use
        • Excellent Sound
        • Good Warmth
        • Light weight
        • Natural Sound Reproductio
        • Portable

        Cons

          Best Uses

          • Amateur Recording
          • Events
          • Performances

          Comments about Behringer Ultracoustic ACX450 Acoustic Guitar Amplifier:

          I currently have a deluxe reverb 65 and the Berringer1000acx but they are heavy for my arthritic back. This amp is perfect, light weight,great sound from a 8" spkr. My gig buddies couldn't believe the great sound from instrument and mic. I haven't played a large room yet it's great in 30x50 so far. I have been playing several instruments for over 60 years and this amp sounds great with guitar and mandolin. I am very pleased!

          Comment on this review

          (1 of 1 customers found this review helpful)

           
          4.0

          satisfied with product - would buy again

          By JD

          from Kansas

          About Me Experienced

          Ask me a question

          Verified Buyer

          Pros

          • Easy To Use
          • Excellent Sound
          • Good Warmth
          • Portable

          Cons

            Best Uses

            • Events

            Comments about Behringer Ultracoustic ACX450 Acoustic Guitar Amplifier:

            The sound is very warm and has great volumn. It is easy to haul around, Pleased with the amp. Would buy again

            Comment on this review

            (3 of 3 customers found this review helpful)

             
            5.0

            Super Little Amp

            By Tom Gustaitus

            from Pennsboro, WV

            About Me Experienced

            Verified Buyer

            Pros

            • Easy To Use
            • Excellent Sound
            • Good Warmth
            • Portable

            Cons

              Best Uses

              • Amateur Recording
              • Home Studio
              • Performances

              Comments about Behringer Ultracoustic ACX450 Acoustic Guitar Amplifier:

              Just a fine little amp. Good sound, nice features, plenty for your solo act. Mic channel has its own EQ. I used the amp for a 4 person jam session and it was great. Had to turn it up to 6+, but it is only 45 watts.
              I have a Beringer sound board so I knew this amp would be just as cool. Can't beat it for the price. I'm very happy with it.

              Comment on this review

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