Ashdown ABM 600-DR-EVO IV Bass Rack Head

Ashdown ABM 600-DR-EVO IV Bass Rack Head

Are you a working pro bass player, seeking a new, road-ready amplifier head that packs a hell of a punch, and is full of tone-shaping options? Then you've come to the right place!
More Info

Availability: IN STOCK

Order before 3pm Mon-Fri for Next Day Delivery

Are you a working pro bass player, seeking a new, road-ready amplifier head that packs a hell of a punch, and is full of tone-shaping options? Then you've come to the right place!

Premium-Grade, Rack-Mountable Bass Head

The Ashdown ABM 600-DR-EVO IV is the fifth incarnation of the incredible rackmount bass head, and delivers a combination of cutting-edge preamplification with raw power and awesome tone-shaping capabilities.

This awesome amplifier has been engineered to survive life on the road, with front and rear rack-mountable brackets and a 2mm mild steel chassis, ensuring it's kept safe and sound when traveling between shows.

Ashdown ABM 600-DR-EVO IV Bass Rack Head Highlights

  • Class-leading preamp sophistication with up-rated powerhouse performance
  • Dual VU meters allow for real-time gain monitoring
  • 600 Watt power stage
  • Variable Valve Drive preamp
  • Sophisticated 9-band EQ, for near-endless tone-shaping possibilities
  • On-board one-knob compressor
  • Sub-harmonic generator
  • Studio-grade connectivity
  • Perfect for regular giggers looking for that

Variable Valve Drive Plus

Ashdown's legendary VVD preamp has seen an upgrade for the EVO IV lineup, and now delivers even more current to the 12AX7 valve, delivering more drive and harmonic content than ever before.

This allows you to dial in sounds ranging from pristine cleans, to one of the finest bass overdrives available - a drive which can be easily selected or de-selected via footswitch.

Sophisticated EQ

As with its forebears, the ABM 600-DR-EVO IV features the kind of tone-shaping capabilities that will make even the most fastidious of bass players sit up and take notice.

This amp head features controls for Bass, Middle, and Treble (as standard), alongside 6 sliders to provide pin-point precise cut and boost to 100 Hz, 180 Hz, 340 Hz, 1.3 KHzm 2.6 KHz, and 5 KHz.

As with the overdrive effect, this EQ can be activated or de-activated via footswitch to take you from a flat, fretless sound through to your favourite EQ setting in an instant.

Further Tone-Shaping

In addition to the 9-Band EQ, this awesome, rack-mountable bass head features two additional mainstays within the EVO lineup: the One-Knob Compressor, and the Sub-Harmonic Generator.

The compressor ensures you get a powerful, even sound that helps you fill out any mix, whilst the Sub-Harmonic Generator allows you to dial in anything from a subtle hint of deep bass to a full-on subterranean rumble.

Studio-Grade Connectivity

As you've come to expect from Ashdown, the ABM 600-DR-EVO IV is packed full of connectivity options.

Amongst the available connections, you'll find a tuner output, line out, transparent FX loop, and a line input for external sampler or sound source.

Ashdown ABM 600-DR-EVO IV Rack Bass Head Specs

  • Power Output: 600 Watts
  • Power Requirement: 115-230 Volts
  • Speaker Outputs: 4 x Jack/Speakon outputs
  • Output Tubes: 1 x 12AX7
  • H x W x D (mm): 135 x 474 x 320
  • Weight (kg): 12.5
More Information
Manufacturer Ashdown
SKU 308847
Shipping Weight (kg) 8.000000
Warranty 5 Years Upon Registration With Ashdown
Series Evo Series
Power 600 Watts
Amp Type valve / solid state hybrid amplifier


We know you want to get your gear as quickly and as safely as possible, Next Working Day Delivery to UK Mainland Addresses, on all IN STOCK items, if ordered before 3pm. This will include a text or email on the day of delivery giving you an exact hour window of when your gear will be with you.

Orders under £99: £4.99 Delivery Charge at Checkout


Orders over £99: Free Next Day Delivery


Weekend Delivery (Saturday-Sunday): £9.99 (When Ordered before 3pm Friday)






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