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Ashdown ABM-300-EVO IV 300-watt Bass Head Demo

300-watt Bass Amplifier Head with 12AX7 Class-A Tube Preamplifier Circuit, EQ, Compressor, Sub-harmonic Generator, and DI
Write review Item ID: ABM300EVO4d1

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Ashdown Bass Tone Just Got Better

Ashdown kicks it up a notch with the ABM 300 EVO IV bass head. Boasting a stage-rumbling 300 watts of output, a tube-driven preamp section, an extended 9-band EQ, and tons of tone-shaping flexibility, the ABM 300 EVO IV is another incarnation of the ABM line of Ashdown amps — the same series that professional bassists rely on to deliver their tone to the masses on stages around the world. Put the power, versatility, and tone of an Ashdown amp to work in your own bass rig, with the ABM 300 EVO IV from Sweetwater.

New features extend your tone-shaping flexibility

The new preamp section in the ABM 300 EVO IV features variable drive technology. A dedicated drive knob lets you adjust the amount of current flowing into the 12AX7 tube for tones that range from the cleanest of cleans to the fattest of overdriven thumps. The updated 9-band EQ section will surprise even dedicated ABM players, with tight tonal control including knobs to handle bass, middle, and treble and an expanded 6-band graphic for fine-tuning. Ashdown's familiar 1-knob compressor and subharmonic generator work to make your tone tighter and fuller than you've ever heard it before and help you claim your rightful place in any mix. All the while you can keep an eye on your levels with the iconic Ashdown VU meter situated right on the face of your amp. Add all of this tonal control the flexibility of footswitching — the EQ, compression, subharmonics, even the variable drive can all be kicked in and out with a tap of your toe.

Bass equipment that's built to last

The ideal combination of function and class, ABM Series bass amplifiers feature tough construction and reliable circuitry. The Ashdown ABM 300 Evo IV bass head features stage-friendly designs and tour-friendly features that make hooking up your amp to your cabs, into the venue mixer, or in the studio easy to do. From the DI with XLR connection to the dedicated tuner output, you can take the professional quality of Ashdown with you wherever you go.

Ashdown ABM 300 EVO IV Bass Amplifier Head Features:

  • 300-watt bass amplifier head for all your gigging needs
  • Powerful 9-band EQ with Bass, Middle, Treble, and 6 sliders (100Hz, 180Hz, 340Hz, 1.3KHz, 2.6KHz, and 5KHz) shapes your sound
  • Hybrid solid-state and 12AX7 tube preamp
  • Built-in compressor, tuner output, and effects loop
  • Ashdown sub-harmonic generator accurately tracks your subharmonics signal and reproduces it an octave lower
  • 4 secure speakON outputs for connecting speaker cabinets
  • DI output with XLR connection
  • Input level VU meter

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At Sweetwater, we're so picky that what we call a "demo" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

What demo means to us is that we've had it out of the box, or maybe it was in a customer's hands for a few days and isn't "factory fresh" as a result. Every demo item we sell has Sweetwater's 2-year Total Confidence Coverage™ warranty, and has been tested and verified up to "new" specs by our factory-authorized technicians to make sure it's in perfect working order before we ship it to you.

When you buy a Demo item at Sweetwater, you get:
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Warranty Info

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Sweetwater's 2-year Total Confidence Coverage™ Warranty gives you extra peace of mind at no extra cost.

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Tech Specs

  • Type: Hybrid
  • Number of Channels: Single channel
  • Total Power: 300W
  • Compression: Yes
  • EQ: 9-band EQ
  • Preamp Tubes: 1 x 12AX7
  • Inputs: 2 x 1/4" (instrument, line)
  • Outputs: 2 x SpeakON, 2 x 1/4" (tuner/line out), 1 x XLR (DI)
  • Effects Loop: Yes
  • Footswitch I/O: 1 x 1/4" (EQ, compression, overdrive, sub octave)
  • Footswitch Included: No
  • Cooling System: Internal Fan, Rear Air Vents
  • Power Source: Standard IEC AC cable
  • Height: 5.3"
  • Width: 18.6"
  • Depth: 13.1
  • Weight: 26.4 lbs.
  • Manufacturer Part Number: ABM-300-EVO IV

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