UK-OBM-300
UK-OBM-300
UK-OBM-300

Ashdown Engineering

UK-OBM-300

£399.00

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 Ashdown UK-OBM-300 is a UK-built, ultra-compact 300-watt bass head finished in Ice Blue. Lightweight and punchy, it features a responsive 5-band EQ, classic Pre-Shape circuit, DI output, FX Loop, and auto-voltage for worldwide use. A clean, dependable amp designed for bassists who want great tone in an extremely portable format.

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 Requirements: 115–230 Volts
• Impedance: Minimum 4 Ohms

CONNECTIVITY & I/O

• Speaker Outputs: 2 × Jack outputs
• High Instrument Input: Impedance 3.9M Ohms, input range 150mV – 20V p-p
• Low Instrument Input: Impedance 1M Ohms, input range 150mV – 10V p-p
• Line Input: Impedance 10k Ohms, input range 300mV – 40V p-p
• DI Output: 600 Ohm balanced, Level –20dBu nominal
• Effects Send: Impedance 22k Ohm, Level 0dBu nominal
• Effects Return: Impedance 22k Ohms, Input Level 0dBu nominal

PERFORMANCE

• Frequency Response: –3dB @ 22Hz and 25kHz
• Signal to Noise: Better than 80dB (EQ flat)
• EQ:
• Bass: ±15dB @ 100Hz
• Lo Mid: ±15dB @ 220Hz
• Middle: ±15dB @ 660Hz
• Hi Mid: ±15dB @ 1.6kHz
• Treble: ±15dB @ 7kHz shelving
• Distortion: Less than 0.5% THD

DIMENSIONS & WEIGHT

• Height: 89 mm
• Width: 220 mm
• Depth: 209 mm
• Net Weight: 1.8 kg

Compact British Power

The Ashdown UK-OBM-300 is a UK-built bass head created for musicians who need reliable performance and great tone in an ultra-portable package. Drawing on the proven OriginAL EVO platform and finished in bold Ice Blue, it delivers 300 watts of clean, controlled output - making it an ideal choice for rehearsals, smaller stages, studio work, and lightweight touring.

Efficient Output, Everyday Versatility

Despite its compact size, the UK-OBM-300 provides ample headroom and consistent response, allowing it to perform confidently across a wide range of environments. Its efficient design makes transport effortless, while its dependable power ensures it can comfortable anchor a gig or sessions without unnecessary bulk.

Straightforward Tone Shaping

A responsive 5-band EQ offers clear, intuitive control over the full frequency spectrum, enabling bassists to shape their sound quickly and accurately. For instant results, the classic Pre-Shape switch applies a carefully voiced contour that enhances low-end impact and high-frequency clarity - perfect for achieving a balanced, mix-ready tone with minimal adjustment.

Essential Connections, Touring-Ready Design

The UK-OBM-300 is equipped with a clean DI output for live sound and recording applications, alongside an FX Loop that allows external pedals to integrate smoothly into the signal path. Auto-voltage operation ensures reliable performance worldwide, making it a practical option for travelling musicians.

Built to Last, Easy to Live With

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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