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Barbetta SONA 31C Keyboard Combo Amplifier  
(Used)

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#486612006000010
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      Barbetta

      Small but oh my!

      The Barbetta SONA 31C Keyboard Combo Amplifier delivers 225W continuous RMS power from 2 - 8" woofers and a 5" horn tweeter -- and it weighs only 35 lbs. Like all Barbetta amps, the SONA 31C keeps it together on the low end, has bell-like clarity on the highest notes, and the middle notes sound absolutely fantastic. It features a modified Linkwitz-Reilly active line-level crossover specially tailored for the SONA 31C. Ported reflex cab with proportional damping is made of polyurethane bonded wood. The power section is a fully discrete, bipolar, class AB design with a slew rate of 70 volts per microsecond. Active level control. 3-band EQ. Barbetta built 5 input channels including an XLR mic input into the SONA 31C combo amp.

      Features
      • 225W RMS power, 450W peak
      • Fully discrete, bipolar, class AB power section design
      • Slew rate: 70 volts per microsecond
      • 2 - 8" woofers and 5" horn tweeter
      • Woofer magnet 40 oz.
      • 2", 2-layer on Kapton former voice coil
      • Low frequency response: 3dB down at 41Hz
      • High frequency response 3dB down at 22kHz
      • Crossover point: 2780Hz
      • Crossover type: active, line level, modified Linkwitz-Reilly specially tailored to this model
      • Crossover filter: 18dB per octave
      • Polyurethane-bonded wood cabinet
      • Damping factor (woofer): 5000 at 1kHz and full power
      • Damping factor (tweeter): 3500 at 10kHz and full power
      • Protection: dynamic current limiting and over-temperature shut-down
      • Low level signal bandwidth: 200kHz
      • System hum and noise (all inputs at minimum): -95dB below full output
      • 17-1/4"H x 15-1/4"W x 12-1/4"D
      • 35 lbs.

      A small but powerful amp with the kind of tone you've dreamed of all your keyboard-playing nights. Order today.

       
      Customer Reviews
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      Review Snapshot®

      by PowerReviews
      BarbettaSONA 31C Keyboard Combo Amplifier
       
      3.2

      (based on 6 reviews)

      Ratings Distribution

      • 5 Stars

         

        (2)

      • 4 Stars

         

        (1)

      • 3 Stars

         

        (0)

      • 2 Stars

         

        (2)

      • 1 Stars

         

        (1)

      Reviewed by 6 customers

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      (2 of 2 customers found this review helpful)

       
      5.0

      Great LITTLE Amp

      By Anonymous

      from Undisclosed

      Comments about Barbetta SONA 31C Keyboard Combo Amplifier:

      I Bought this looking for something small, powerful and easy to move. This is IT! The sound is Full, Rich and Sparkly Clear for Piano, Organ or any Synth sounds, and my Motif has LOTs of them. This amp is SO clear that it will Reveal the subtle nuances and slight distortion of your keyboards' Samples if you have a synth (and who doesn't), you'll hear it all. The bass is Clear and Deep. Like most SMALL amps, i think it is suited to Writing, Practice and Small rehearsals, which it Excels at, for larger stage gigs, i would opt for a Larger Amp. I mostly play in my studio Writing and Rehearsing and this is the BOMB, especially for small home studio spaces as it has a small Footprint but a HUGE sound. I think the Older models may have suffered from some design flaws, but i have the newest model bought in early 2010, mine has a Grey Color Front, these are no longer WHITE amps... it's a GREAT AMP if you're reasonable about your expectations for what any SMALL AMP is about. I learned much of this when i Searched for a Small BASS AMP too... Small is cool, but it does not have to sound anemic with the right amp!

      Comment on this review

      (3 of 4 customers found this review helpful)

       
      2.0

      Overpriced

      By PT

      from Washington D.C.

      Comments about Barbetta SONA 31C Keyboard Combo Amplifier:

      Not a bad practice amp I guess, but not much good for anything else. The mic input shorted out in about a month. All of the control knobs are really cheap feeling plastic. Finally, the distortion levels are really high even at low volume using any of my keyboards. If you're gigging buy something else.

      Comment on this review

      (4 of 4 customers found this review helpful)

       
      2.0

      Bogus specs = cheap sound

      By Geo-5vY6o

      from here, there and everywhere.

      Comments about Barbetta SONA 31C Keyboard Combo Amplifier:

      In an effort to impress the gullible, Barbetta hypes power-ratings. If this thing produces 225 rms, it would have to be into two ohms. When you think about it, <-95dB signal-to-noise ratio, (with all controls at minimum mind you!) is nothing to brag about. And that "5-inch" tweeter? ...maybe the plastic horn is 5 inches. It sounds like a cheap piezo driving it. That makes sense... Two small 8-ohm speakers, plus a piezo wired in parallel would make less-than a 4-ohm load, so they could advertise 200+ watts with a cheap amp. In reality, this amp is probably closer to 50 weak-transistor watts before clipping.Granted, the cabinet is lightweight. It should be. It certainly isn't weighed down by quality components or materials. In my experience, all Barbetta products are junk. This was no exception.

      Comment on this review

       
      4.0

      Versatile Lightweight Amp

      Comments about Barbetta SONA 31C Keyboard Combo Amplifier:

      If there is such a thing as a keyboard player's boutique amp, this is it. I have owned the SONA 31C for about 2 years now and appreciate this amp on several levels. First, its versatility; I have used it for keyboards, acoustic guitar, a small grab 'n run P.A., and as a dedicated P.A. side file monitor.The sonics are outstanding from this bi-amped package - a very clean amp with very respectable linearity across the spectrum. Because I typically mount the amp on a stand, I rarely need to turn it up very loud, except as a P.A. at an outdoor gig and it had plenty of undistorted punch. The female XLR jack eliminates the need for me to bring a mixer just to use one mic. And the male XLR permits me to connect directly to the house when playing an instrument. Because the Line inputs are tip-ring-sleeve, I have also used the amp as a side fill monitor from the mixing console. At 35 lbs., the thing is so lightweight, I can easily pick it up with one hand, and it is the first thing I put on my hand truck (sideways) before stacking other things. The layout of the jack/knob/switch panel on the back is very clean, with low profile knobs, rocker power switch, and no-nonsense, legible labels. I like the giant green L.E.D. on the front surface that creates no doubt when the unit is powered on. The carpet covering has proved to take the use & abuse. I appreciate the that the power cable is modular and may be removed for transportation.The only downside is that the price is a little steep, but if you believe in buying the right device the first time and not looking back, this amp is for you.

      Comment on this review

      (7 of 8 customers found this review helpful)

       
      1.0

      Overrated!!!

      By Luke-Hbp_B

      from Madison, WI

      Comments about Barbetta SONA 31C Keyboard Combo Amplifier:

      This thing costs WAY too much for what it is. The HF horn has a very narrow dispersion angle to it. The amp sounds great if you are exactly in front of it, but off to the side the sound is muddy and lacks definition.The internal amplifier is SERIOUSLY inadequate; it distorts at even moderate volumes (I play jazz piano- we're not talking about some rock band). Last night the thing overheated and totally gave out on me.

      Comment on this review

      (2 of 2 customers found this review helpful)

       
      5.0

      Best lightweight KB amp!

      By Anonymous

      from Undisclosed

      Comments about Barbetta SONA 31C Keyboard Combo Amplifier:

      This is a great product. It has the perfect combination of sound quality and light weight. Perfect for the keyboardist who has more than a couple of gigs a year. You can carry it in one hand, unlike the Roland KC500, etc. And the smaller speakers are better for piano sounds than huge 15" woofers that have a lot of oomph but lack clarity. Don't be fooled, though... this little guy can put out! And the sound quality is fantastic. Highly recommended!

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