UK-ABM-300-EVO IV
UK-ABM-300-EVO IV
UK-ABM-300-EVO IV
UK-ABM-300-EVO IV
UK-ABM-300-EVO IV
UK-ABM-300-EVO IV

Ashdown Engineering

UK-ABM-300-EVO IV

£949.00

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 UK-built UK-ABM-300-EVO IV is a powerhouse of tonal flexibility and classic warmth. Featuring 300 watts of pure Ashdown bass tone, it boasts a foot-switchable Variable Valve Drive Plus, precision 9-band EQ, One Knob Compressor, and Sub-Harmonic Generator.

Built for performance and studio use alike, with comprehensive connectivity including FX loop, tuner out, and Line Input.

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: 300 Watts
• Power Requirement: 115–230 Volts
• Impedance: Minimum 4 Ohms
• Preamp Tubes: 1 × 12AX7

CONNECTIVITY & I/O

• Speaker Outputs: 2 × Neutrik Jack/Speakon outputs
• 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
• Effects Send: Impedance 22k Ohm, Level 0dBu nominal
• Effects Return: Impedance 22k Ohms, Input Level 0dBu nominal

PERFORMANCE

• Frequency Response: -3dB @ 17Hz and 30kHz
• High Instrument Input: Impedance 3.9m Ohms, input range 150mV
• Low Instrument Input: Impedance 10k Ohms, input range 300mV – 40V p-p

DIMENSIONS & WEIGHT

• Height × Width × Depth (mm): 617 x 475 x 227
• Weight (kg): 11.60

Variable Valve Drive Plus

At the heart of the UK-ABM-300-EVO IV lies the upgraded Variable Valve Drive Plus preamp. Delivering more current to the 12AX7 tube unlocks richer drive and harmonic content than even before, allowing players to move from pristine cleans to thick, gritty overdrive. The Drive level can be present and engaged via footswitch, giving instant access to a vast tonal palette.

Precision EQ Control

With Bass, Middle, and Treble controls alongside a 6-band slider section at 100Hz, 180Hz, 340Hz, 1.3kHz, 2.6kHz, and 5kHz. Combined with the iconic illuminated VU meter for quick gain staging, this EQ system makes it easy to dial in anything from subtle warmth to precise, cutting tones.
Footswitchable control ensures effortless transitions between flat and sculpted sounds.

Dynamic Tools for Every Player

Ashdown's renowned One Knob Compressor keep your sound tight, powerful, and consistent at any volume, while the Sub-Harmonic Generator adds an octave below your notes for unrivalled depth. From a subtle low-end reinforcement to a full-blown subterranean growl, these features guarantee a tone that stands out in any mix.

Professional Connectivity

The UK-ABM-300-EVO IV includes a transparent FX loop, Line Input, DI output, tuner output, and output muting for silent tuning. A pair of Neutrik Jack/Speakon outputs with a minimum 4-ohm load ensure flexible cabinet pairing options, whether driving a single 8-ohm cab, two 8-ohm cabs, or single 4-ohm cab.

Proudly made in the UK

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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