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Behringer Ultracoustic ACX900 Acoustic Guitar Amplifier   

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The Behringer ACX900 is a 90W, two channel guitar amplifier that features 2 - 8" speakers for true acoustic fidelity. It includes 2 independent FX pr...Read More

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OVERVIEW

True, natural acoustic sound.

The Behringer ACX900 is a 90W, two channel guitar amplifier that features 2 - 8" speakers for true acoustic fidelity. It includes 2 independent FX processors and an ultramusical, 7-band graphic EQ for each channel plus the revolutionary FBQ Feedback Detection system to reduce feedback in an instant. In addition, the ACX900 holds a dedicated Tuner switch per channel for use with an external tuner, FX inserts, and a balanced stereo XLR Line out with Ground Lift switch to enable a direct connection to your mixing console. The speaker cab also comes with a dual footswitch FS112.

FEATURES
  • 90W power
  • 2-channels (instrument and vocal) with separate controls
  • 2 - 8" dual-cone speakers
  • 2 integrated 24-bit digital FX processors each with 16 programs including reverb, modulation, delay, and various effects combinations
  • Revolutionary FBQ Feedback Detection System
  • Individual 7-band graphic EQ on each
  • channel
  • Switchable phase correction on Channel 1
  • for feedback prevention
  • Instrument and mic FX Inserts for external effects devices
  • CD input
  • Balanced XLR Line Out with ground lift
  • Dual footswitch FS112 for FX 1 and 2 bypass included
SPECIFICATIONS

Ultracoustic ACX900 Acoustic Guitar Amplifier

  • 20.7"W x 16.7"H x 9.1"D
    37 lb.
Reviews
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Review Snapshot

by PowerReviews
BehringerUltracoustic ACX900 Acoustic Guitar Amplifier
 
4.0

(based on 21 reviews)

Ratings Distribution

  • 5 Stars

     

    (11)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (3)

  • 2 Stars

     

    (4)

  • 1 Stars

     

    (0)

43%

of respondents would recommend this to a friend.

Pros

  • Easy to use (4)
  • Portable (4)

Cons

No Cons

Best Uses

  • Outdoor events / games (3)
    • Reviewer Profile:
    • Experienced (7)

Most Liked Positive Review

 

Great Buy for the Price

I play a couple of high end acoustic guitars. I had never considered until now to purchase an acoustic amp. I finally made the move and I amnot disappointed. The proble with many...Read complete review

I play a couple of high end acoustic guitars. I had never considered until now to purchase an acoustic amp. I finally made the move and I amnot disappointed. The proble with many musicians as my Luthier has stated is that they buy low end instruments and expect equipment to make them sound better than what you have paid for. I feel I have made a steal with this amp and have no regrets. Once I went direct XLR to my PA system I was blown away. I don't rely on effects, so the sound is clear, bright and no distortion as one had mentioned in an earlier review.

VS

Most Liked Negative Review

 

ACX900 PROBLEMS....

I own several Behringer products including 2 of their small amps and am very pleased with the items I own. I was NOT pleased with this amp. The amp microphone effects circuit went haywire...Read complete review

I own several Behringer products including 2 of their small amps and am very pleased with the items I own. I was NOT pleased with this amp. The amp microphone effects circuit went haywire and was making loud irritating sounds, WITH AND WITHOUT a mic or guitar plugged in. Additionally, the effects send circuit had a short. This perhaps reflects quality control. As I said, I have other Behringer gear I am happy with so I was surprised by these issues. It's gong back and I will not reorder this. I need A RELIABLE ACOUSTIC AMP. Although more money, I going for the AG60 60W 2x8 Acoustic Guitar Combo Amp. Maybe I just got a lemon......

Reviewed by 21 customers

Displaying reviews 1-10

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5.0

Exceeded expectations

By IndyGuitar

from Indianapolis

About Me Experienced

Ask me a question

Verified Buyer

Pros

  • Design / looks
  • Features
  • Great sound
  • Plenty of power
  • Price / value

Cons

    Best Uses

    • Practice amp
    • Self-accompaniment on vocals
    • Small / medium venue performance

    Comments about Behringer Ultracoustic ACX900 Acoustic Guitar Amplifier:

    Have owned Fender Acoustasonic Junior for years and wanted to try something new... bought another acoustic amp a month or so ago, but it only had 1 speaker and I was not all that impressed with the sound or the features (although it was certainly lighter than any 2 spkr amp). Then I saw this puppy. I've had good luck with Behringer -- a previous amp that I gave to my brother, and some pedals. They seem to be well-designed and cost-effective. GET TO THE POINT: I love this amp, esp for the price. I have complete control over the sound, and it maintains that rare balance between an amp not coloring the sound of a high-end acoustic guitar, and delivering the colors you *want* to hear when you want to hear them. So, yeah, I'm happy, and mF was great about this "swap."

     
    5.0

    Couldn't be happier with my new amp.

    By rex47

    from Alto, GA

    About Me Experienced

    Verified Buyer

    Comments about Behringer Ultracoustic ACX900 Acoustic Guitar Amplifier:

    Very good overall quality. Looks and sounds great. I feel like I got an excellent bargain in this amp.

     
    3.0

    Cheap Workhorse

    By Fairplay

    from Ohio

    About Me Experienced

    Ask me a question

    Pros

    • Easy To Use
    • Portable

    Cons

    • Poor Sound Quality

    Best Uses

    • Events

    Comments about Behringer Ultracoustic ACX900 Acoustic Guitar Amplifier:

    I have owned this amp for about 7 years and have used it a lot. I can't fault it on how well it has held up to constant use and being moved around to gigs but it has never sounded that great. I did not realize how bad it sounded until I ran my Martin direct into my new PA system. If you can't afford anything better I guess it would do.

     
    5.0

    Behringer ACX 900 is excellent PA System

    By Joe

    from Hamilton, Ontario, Canada

    About Me Experienced

    Pros

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

    Cons

    • No Problem

    Best Uses

    • Events
    • Home Studio
    • Jamming

    Comments about Behringer Ultracoustic ACX900 Acoustic Guitar Amplifier:

    I bought it about a year ago and I used it all the time at home. This year (2014) a friend of my hang around with me and he plays acoustic guitar too. I hooked up my Martin and the microphone on my side and he hooked up his Takamine and microphone on the other side. we jam together for three hours and every thing was excellent. We started using it all the time since then, no problem.

     
    2.0

    Cat in a bag...

    By Mirco

    from Ca, Serbia

    About Me Experienced

    Pros

    • Easy To Use
    • Portable

    Cons

    • Limited Functions
    • Weak

    Best Uses

    • Events

    Comments about Behringer Ultracoustic ACX900 Acoustic Guitar Amplifier:

    Don't buy this amp. It looks very nice, vintage, but after all you will regret. Sound is not so bad, but amp is very, very weak.

    (1 of 1 customers found this review helpful)

     
    2.0

    Not Good Out Of the Box

    By 1

    from pensacola, Fl

    About Me Experienced

    Pros

      Cons

      • Poor Sound Quality

      Best Uses

        Comments about Behringer Ultracoustic ACX900 Acoustic Guitar Amplifier:

        Took it out of the box, plugged it in, lights on chan 1 flashing with nothing connected. turned tuner and phase and feedback off to get sound. Amp sounded terrible. Connected to chan 2 and was quite suprised how good it sounded. Went back to chan 1 and it was bad. Returned it and will try something else. Amp does look nice and vintage, too bad it doesn't function as promised. Mfriend was great about the return.

        (4 of 5 customers found this review helpful)

         
        3.0

        ACX900 PROBLEMS....

        By JT

        from Vegas, NV

        About Me Experienced

        Pros

        • Easy To Use
        • Portable

        Cons

        • Reliability

        Best Uses

        • Amateur Recording

        Comments about Behringer Ultracoustic ACX900 Acoustic Guitar Amplifier:

        I own several Behringer products including 2 of their small amps and am very pleased with the items I own. I was NOT pleased with this amp. The amp microphone effects circuit went haywire and was making loud irritating sounds, WITH AND WITHOUT a mic or guitar plugged in. Additionally, the effects send circuit had a short. This perhaps reflects quality control. As I said, I have other Behringer gear I am happy with so I was surprised by these issues. It's gong back and I will not reorder this. I need A RELIABLE ACOUSTIC AMP. Although more money, I going for the AG60 60W 2x8 Acoustic Guitar Combo Amp. Maybe I just got a lemon......

        (5 of 5 customers found this review helpful)

         
        4.0

        Great with GR setup

        By Charles McGuire

        from Undisclosed

        Comments about Behringer Ultracoustic ACX900 Acoustic Guitar Amplifier:

        Good buy for the money but if you can afford it go for the 1800.
        Plug my GR33 into the CD input in the back and run ther guitar out to the Inst. channel. The GR through the Aux in sounds as good, or better, as through my Bose computer speakers.
        Would have liked a master volume control and a little more headroom on the mic channel.
        Looks stuuning and everything appears well built.
        I've always had good luck wiith Behringer's products and this is one of my favorites.

        (6 of 6 customers found this review helpful)

         
        5.0

        cool little Amp

        By Anonymous

        from Undisclosed

        Comments about Behringer Ultracoustic ACX900 Acoustic Guitar Amplifier:

        I know this amp is not the loudest amp in the world, but as far as a practice amp or coffee shop type gigs it's perfect. Ive had it for about 2 years and it still runs smooth. Honestly what really makes the difference in the end is the preamp system or pick up you have for your acoustic. I have a Fishman prefix pro and plugged into the amp it sounds really good. The cool things is you can use the amp as a direct in to a PA for a louder setup and still get all the effects you need and well as a really clean sound.

        (3 of 5 customers found this review helpful)

         
        2.0

        Tinny and weighs a ton

        By Gecko

        from Ashburn, VA

        Comments about Behringer Ultracoustic ACX900 Acoustic Guitar Amplifier:

        This thing is small and still weighs a ton. If it sounded good, that would redeem it, but the tinny sound just could not be corrected, regardless of settings. I had Fender Acoustasonic 30 amp, which I would recommend over this one. Should have kept the Fender. I returned the Behringer right away.

        Displaying reviews 1-10

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