Ashdown ABM 900 EVO Head
Price engine
Classified Ads

All user reviews for the Ashdown ABM 900 EVO Head

  • Like
  • Tweet
  • Submit
Average Score:5.0(5/5 based on 1 review)
 1 user review100 %
Not satisfied with those reviews?

iamqman's review"Excellent!"

Ashdown ABM 900 EVO Head
Ashdown has climbed their way on top of the bass amp heap. They have been able to grab a huge portion of the bass amp market in a relativity quick pace. Artist from U2 to System of the Down have used the Ashdown products on there stage and studio rooms.

This bass amp is one of the best sounding and most versatile units on the market today. This head is a whopping 900 watts of extreme low end power. You get enough power to play and stage in any area or club in the world. This head can cover a ton of ground with the available tones in this head.


Power Output (RMS) 575W + 575W
Power Requirement 230 / 115V
Frequency Response -3dB at 17Hz and 30kHz
Speaker Outputs Minimum impedance 4 Ohms
High Instrument Input Impedance 3.9m Ohms, input range 150mV - 20mV p-p
Low Instrument Input Impedance 10k Ohms, input range 300mV - 40V p-p
Line Input Impedance 22k Ohms, input level 0dBu nominal
Sub Output Impedance 1k Ohms, level 0dBu Nominal
DI Output 600 Ohms balanced, level 0dBu nominal
Tuner Output Impedance 22k Ohms, level 0dBu nominal
EQ Bass +/-15dB @ 45Hz
Middle +/-15dB @ 660Hz
Treble +/-15dB @ 7kHz shelving
Slider 1 +/-15dB @ 180Hz
Slider 2 +/-15dB @ 340Hz
Slider 3 +/-15dB @ 1.3kHz
Slider 4 +/-15dB @ 2.6kHz
Shape (Push Flat) +8dB @ 50Hz & 4kHz, -8dB @ 400Hz, filter slope - 6dB/octave
Effects Send Impedance 22k Ohms, level 0dBu nominal
Effects Return Impedance 22k Ohms, input level 0dBu Nominal
H x W x D (mm) 158 x 610 x 355
Weight (kg) 28


Once I plugged into this head I immediately knew that i had a winner. The controls are a little confusing at first but after a few minutes you get the idea of how they constructed the unit.

The sub control are a little tricky at first. These are the controls under the basic EQ up top. I am referring to the drive, compression, and sub harmonics. Using these sparingly and wide open will give you an assortment of optional tones and various control over how the bass EQ gets thick or thinner or more distorted. You can really dial in overall tone that will better match your bass guitar and or the pickups that you are using.


At new these units come in at around $1000. Not a bad price for the tone of this unit. This amp is much better that say a Gallien-Krueger or Hartke. This amp has a round tone that will fit in a metal band and a pop bubble gum band. The versatility is pretty much endless when it comes to fitting this amp in any band setting.

I would recommend this amp to anyone searching for a great sounding bass amp that will fit any need you may have. You will not be disappointed with the tone of this amp and the value of what options you get.