ABM-EVO IV DUAL-VU-RACK-HEAD
Ashdown ABM EVO iv dual VU rack head right
Ashdown ABM EVO iv dual vu rack head left
Ashdown ABM EVO iv dual vu rack head back

Ashdown Engineering

ABM-EVO IV DUAL-VU-RACK-HEAD

£1,299.00
Please note: All UK-built products are made to order. The approximate lead time is 20 days.

For more information, please email: info@ashdownmusic.co.uk

The ABM 600 EVO IV Dual VU Rack Head delivers 600 watts of stage-ready power in a rugged 3U steel chassis, complete with Ashdown's signature dual illuminated VU meters. Its class-leading preamp features Variable Valve Drive Plus for everything from clean warmth to driven grit, while the 9-band EQ, one-knob compressor, and Sub-Harmonic Generator give you precision control and huge low-end authority. Built for touring reliability with pro-grade connectivity, the ABM 600 is an industry-standard amp head trusted by working bassists worldwide.

Pairs well with

Ships within 1-2 business days (UK Customer Orders Only)

5 Year Warranty

Engineered to Last, Trusted by the Best

Product Specifications

POWER

• Power Output: 600 Watts
• Power Requirement: 115–230 Volts
• Output Tubes: 1 × 12AX7

CONNECTIVITY & I/O

• Speaker Outputs: 4 × Jack/Speakon outputs
• High Instrument Input: Impedance 10kΩ, input range 150mV
• Low Instrument Input: Impedance 10kΩ, input range 300mV – 40V p-p
• Line Input: Impedance 22kΩ, input level 0dBu nominal
• DI Output: 600Ω balanced, Level 0dBu nominal
• Tuner Output: Impedance 22kΩ, Level 0dBu nominal
• Effects Send: Impedance 22kΩ, Level 0dBu nominal
• Effects Return: Impedance 22kΩ, input level 0dBu nominal

PERFORMANCE

• Frequency Response: –3dB @ 17Hz – 30kHz
• Impedance: Minimum 4 Ohms per side

DIMENSIONS & WEIGHT

• H × W × D (mm): 135 × 474 × 320
• Weight: 12.5 kg

Variable Valve Drive Plus

The Variable Valve Drive preamp in the ABM EVO IV has been completely re-engineered to deliver even more harmonic richness and dynamic drive. By pushing more current through the 12AX7 tube, players now have access to the widest spectrum of bass overdrive ever offered in an ABM - from crystal-clear, articulate cleans to thunderous, full-bodied distortion. With the drive level presettable and footswitchable, this section makes it effortless to jump between subtle warmth and stage-shaking growl.

Next-Level EQ Control

EVO IV introduces an enhanced 9-band EQ system, bringing precision tonal shaping to new heights. Alongside the familiar Bass, Middle, and Treble controls, six additional sliders allow exact boost and cut at 100Hz, 180Hz, 340Hz, 1.3kHz, 2.6kHz, and 5kHz, ensuring total command of your sound. The new Input VU meter makes it easy to find the perfect gain sweet spot for your instrument, while a footswitchable EQ lets you toggle between flat tones and your customised settings instantly.

One-Knob Dynamic Compressor

A cornerstone of the ABM range, the one-knob compressor is retained in EVO IV. This intuitive control delivers smooth, even dynamics with the flick of a switch, ensuring your bass tone remains punchy, balanced, and mix-ready. Whether you’re underpinning a live band or tracking in the studio, this compressor guarantees a professional polish without overcomplication.

Professional Connectivity

Designed with working bassists in mind, the EVO IV provides a wealth of professional-grade connections. A dedicated tuner out, transparent FX loop, line input for samplers or external sources, and line out cover every performance or recording need. The output mute function ensures silent tuning by cutting the DI while keeping the tuner live - ideal for seamless stage setups.

Flexible Footswitch Integration

User

manual

CLICK THE IMAGE ABOVE TO DOWNLOAD THE USER MANUAL

FAQs

Please read our FAQs page to find out more.

How Long Will My Order Take To Arrive?

Orders placed before 3pm (Monday-Thursday) are dispatched on the same day. UK Customer orders are shipped on a next-day delivery service via TNT.

Do You Shop To Outside Of The UK?

Currently, we do not facilitate orders to outside of the UK. If there is a specific product that you are after, be sure to check our Dealer Locator to find your closest Ashdown dealer!

If you cannot find a local dealer, please do not hesitate to get in touch and we will try and assist!

Do Ashdown Products Come With A Warranty?

Yes! All Ashdown product purchased include a 5 year warranty, giving you peace of mind and long-term support.

For more information on warranties, visit our Warranty Info page!

Where Can I Buy Ashdown Spares and Accessories?

Spare parts, footswitches, and accessories can be purchased directly through our in-house service team. If you're looking for something specific, our team will be happy to point you in the right direction!

How Can I Contact Ashdown Support?

Our passionate UK-based team is always ready to help. You can get in touch by phone or email, and we'll be happy to assist with any questions.

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