Ashdown ABM-600-DR-evo Iv
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Manufacturer Information
Ashdown
https://www.ashdownmusic.com
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Algam SAS
Email: contact@algam.net
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Historical Context and Positioning in the Range
The ABM series has become over the years a benchmark for bassists seeking a powerful, versatile, and reliable touring amp, instantly recognizable by its illuminated VU meters. This EVO IV (fifth evolution in the line) pushes the ABM DNA further: a preamp with strong character, a beefy power section, and above all an all-in-one approach designed to handle stage situations without multiplying external pedals.
In this ABM 600 Dual VU Rack version, Ashdown clearly targets a professional format: 3U steel chassis, simplified rack mounting (front and rear supports), and ergonomics focused on quick adjustments. The goal is simple: keep the ABM tone while gaining control, dynamics, and EQ precision.
Who This Amp Is For
This head is ideal for the intermediate to professional bassist who wants an immediately solid sound with a wide range of adjustments. Its power reserve and rack-mountable design make it a natural candidate for stage and demanding rehearsals, while remaining very relevant in the studio thanks to the balanced DI output and fine shaping possibilities.
Regarding styles, the ABM-600-DR-EVO IV excels whenever presence and body are needed: rock, metal, funk, pop, reggae/dub, or fusion. It also adapts to more nuanced playing (fingers, pick, slap) thanks to its simple, musical compressor and an EQ capable of refining low-mids without hollowing out the instrument's personality.
Technical specifications
| Category | Bass amp head | Category | Amplifier |
| Technology | Hybrid | Number of effects | 3 |
| Input | jack, aux jack, effect loop jack, footswitch | Number of channels | 1 |
| Output | XLR DI, Tuner jack, Cabinet 2 x Speakon, Line out jack | EQ | 9-band |
| Effects loop | Yes | Color | Grey |
| Footswitch input | Yes | Power output | 600 W |
| Pre-amp tubes | 12AX7 | Weight | 10.5 kg |
| Pedalboard included | No | Dimensions (mm) | 457 x 305 x 140 |
| Attenuator | No | ||
Questions frequently asked
Which speaker can be used with the Ashdown ABM-600-DR-evo IV?
The 600 W power is utilized with a minimum total load of 4 ohms. Four speaker outputs on Neutrik Speakon/6.35 mm jack connectors are provided.
Is the tube Valve Drive footswitchable?
The preamp includes a 12AX7 tube and a Variable Valve Drive whose level can be preset. Activation of the Drive by footswitch is possible via a compatible pedal, not included.
What DI and effects connectivity is available?
There is a balanced XLR DI output, a jack line output, and a jack tuner output. The effects loop uses Send and Return jacks at a nominal level of 0 dBu. The Output Mute function cuts the DI signal while maintaining the tuner output.
Does the equalizer allow quick setting changes on stage?
The 9-band EQ includes dedicated frequencies at 100 Hz, 180 Hz, 340 Hz, 1.3 kHz, 2.6 kHz, and 5 kHz. Footswitching allows switching from a flat to a sculpted setting with a compatible footswitch.
Is this format suitable for a touring rack?
The 3U steel chassis measures 457 x 305 x 140 mm and weighs 10.5 kg. Front and rear mounting brackets are provided for rack installation.



