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Ashdown ABM RC EVO IV 600 Watt Rackmount Bass Head
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Ashdown ABM RC EVO IV 600 Watt Rackmount Bass Head

by Ashdown
Ashdown ABM 600 RC EVO IV, 600-Watt Rackmount Bass Amp Head For the best part of 20 years, the Ashdown ABM amp has been a firm favourite wit..

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Ashdown ABM 600 RC EVO IV, 600-Watt Rackmount Bass Amp Head

For the best part of 20 years, the Ashdown ABM amp has been a firm favourite with professional gigging bassists around the world. Now that incredible ABM technology has been refined into the ABM 600 RC EVO IV, combining that much sought-after ABM preamp with a powerful 600 Watt power stage, all pulled together into a slinky little rack-mount head.

Takes you from Zero to Rock Hero

Part of the ABM charm is achieved via the Variable Valve Drive in the preamp section, which has been newly upgraded for the EVO IV. This technology pushes more current into the 12AX7 tube, giving you more drive and harmonic content than before, and allowing you to dial in sounds ranging from a pristine clean , to a nice, full bass overdrive tone. Best of all? This feature can be dialed in and then left alone, as it can be activated/deactivated via footswitch!

The Best EQ In The Business

Featuring a sophisticated 9-band EQ and that familiar Ashdown VU meter, the ABM EVO IV allows you to accurately dial in those perfect tones as and when you need them. As with the above mentioned Variable Valve Drive, the EQ on this amp can be activated/deactivated via a footswitch, which can take you from a flat, fretless sound up to your favourite EQ setting in an instant!

Easy to Use Compressor

Users of earlier ABM amps will already be familiar with the One Knob Dynamic Compressor. This simple-to-use, great-sounding compression unit helps you to deliver a powerful, even sound that's perfect for helping you fit into any mix.

How Low Can You Go?

As if those features already discussed weren't enough, the ABM RC EVO IV also features its own Sub-Harmonic generator. This handy little feature adds an octave below the notes that you play, giving you a much thicker sound that can be felt as much as heard, and is independently controllable, so you can add anything from a subtle hint of deep bass through to ground-shakingly thunderous tones.

Bags of Connections

In addition to the usual Instrument input sockets, the ABM RC EVO IV features outputs for a tuner, Line Out, transparent FX loop, and a Line Input for external sound sources. There's also the option to mute your Output signal, which doesn't affect the tuner output, allowing you to re-tune in silence!

Spread the Cost

Here at PMT we have a range of finance options available for you to use, which would allow you to spread the cost over several months! Contact our online Sales team directly, or call into your local PMT store to discuss the finance options that we offer.

Technical Specs

  • Power Output: 600 Watts
  • Power Requirement: 115-230 Volts
  • Speaker Outputs: 4 x Jack/Speakon outputs
  • Frequency Response: -3dB @ 17Hz und 30KHz
  • High Instrument Input: Impedance 3.9m Ohms, input range 150mV
  • Low Instrument Input: Impedance 10k Ohms, input range 300mV - 40V p-p
  • Line Input: Impedance 22k Ohms, input level 0dBu nominal
  • DI Output: 600 Ohm balanced, Level 0dBu nominal
  • Tuner Output: Impedance 22k Ohms, Level 0dBu nominal
  • Impedance: Minimum 4 Ohms Per Side
  • Effects Send: Impedance 22k Ohm, Level 0dBu nominal
  • Effects Return: Impedance 22k Ohms, Input Level 0dBu Nominal
  • Output Tubes: 1 x 12AX7
  • Dimensions H x W x D (mm): 135 x 474 x 320
  • Weight (kg): 12.5


Weight (kg)13.0000
Warranty2 years
Power600 watts
Amp Typehybrid amplifier

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