Product Specifications

POWER

• Power Output: 15 Watts (all-valve)
• Power Requirements: 240/230/115V, 50–60Hz
• Preamp Tubes: 1 × ECC83
• Output Tubes: 2 × EL84

CONNECTIVITY & I/O

• Speaker Outputs: 4Ω and 8Ω or internal load (no speaker required)
• Headphone Output: Yes (silent operation option)
• DI Output: Transformer-derived balanced
• Impedance: <600 Ohms

PERFORMANCE

•EQ: Passive standard Bass, Middle, Treble tone stack
• Analogue VU Meter: Instant visual display of amp’s output
• Tonal Range:
• Fat, clean bass tones
• Growling, overdriven valve tones when driven hard
• Suited for: Studio sessions and smaller live setups
• Designed for: Durability, serviceability, and long-term reliability

DIMENSIONS & WEIGHT

• Height: 150 mm
• Width: 240 mm
• Depth: 180 mm
• Net Weight: 5.34 kg

A Classic, Reimagined

The Ashdown CTM-15 is a modern revival of a timeless classic, packing 15 watts of all-valve power into a compact and portable head. Perfect for studio sessions, rehearsals, or small gigs, it delivers the unmistakable warmth, character, and musicality that only valves can provide.

Silent Practice, Studio Ready

Designed with today's musicians in mind, the CTM-15 features a built-in load and headphone output for silent operation. This makes it a powerful studio companion, allowing you to capture true valve tone without disturbing the neighbours, or to practice privately while still enjoying rich, responsive dynamics.

Big Ton, Small Wattage

Don't let the low wattage fool you, with its dual EL84 power stage, the CTM-15 produces tones far bigger than expected. Push it hard, and you'll discover growling, harmonically rich overdrive at manageable volumes. Dial it back, and you'll enjoy clean, fat bass tones full of depth and warmth.

Vintage Feel, Modern Precision

True to Ashdown tradition, the CTM-15 includes an analogue VU meter, offering real-time monitoring of your output levels. More than just a visual touch, it helps you quickly find the amp's sweet spot, where tune compression and tone blend perfectly.

Built to Last, Ready to Play

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.

Didn’t find your answer?

Don't hestitate to contact us