Product Specifications

POWER

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

CONNECTIVITY & I/O

• Speaker Outputs: 2 × Jack/Speakon outputs
• High Instrument Input: Impedance 3.9MΩ, input range 150mV
• Line Input: Impedance 22kΩ, input level 0dBu nominal
• DI Output: 600Ω balanced, Level 0dBu nominal
• Tuner Output: Impedance 22kΩ, Level 0dBu nominal
• Effects Return: Impedance 22kΩ, input level 0dBu nominal

PERFORMANCE

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

DIMENSIONS & WEIGHT

• H × W × D (mm): 175 × 495 × 310
• Weight: 13.5 kg

A Collaboration Born of Legacy

The Interstellar 600 is the result of decades of collaboration between Ashdown Engineering and legendary bassist Guy Pratt. Inspired by his long history with the ABM-900, this 600-watt powerhouse is tailored to deliver the versatility, punch, and precision that define his unmistakable tone. More than just an amplifier, it celebrates both Guy’s 40-year career and Ashdown’s tradition of British craftsmanship.

Sculpting Tone with Precision

At the heart of the Interstellar lies Ashdown’s 9-band EQ system, offering incredible tonal flexibility. Players can keep things simple with classic Bass, Middle, and Treble controls, or dive deeper with the additional sliders for precise tonal sculpting across the frequency spectrum. The addition of a 12AX7-driven valve drive section lets you blend in warmth, edge, or full-on overdrive, unlocking tones that range from rich cleans to gritty, driven bass lines.

Built for Professional Demands

The Interstellar doesn’t just excel in tone - it’s also packed with the connectivity today’s musicians demand. With tuner, line, and DI outputs, a transparent FX loop, and line inputs for external sources like pedals or samplers, it integrates seamlessly into studio or stage setups. Output muting allows for silent tuning while keeping your signal flow intact, making it as practical as it is powerful.

Crafted with Style and Substance

Visually striking as well as sonically impressive, the Interstellar is housed in a custom wood enclosure that’s both acoustically tuned and built to last. Its understated yet elegant design reflects Ashdown’s boutique sensibilities while paying homage to Guy’s legacy. For added flexibility, an optional rack kit is available, making it suitable for touring rigs as well as studio environments.

Guy Pratt – A Career in Sound

User

manual

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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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