Ashdown UK-CTM-300 | 300W All-Valve Bass Amp Head | UK-Built

Hand-built in the UK. 300 watts of pure valve authority.

The Ashdown UK-CTM-300 is built by hand in the Ashdown Custom Shop in England — not a factory floor, not an overseas facility. Every unit is small-batch production, assembled by craftspeople who know what serious bass players need. If UK provenance and all-valve performance matter to you, this is the amp head you've been looking for.

⚠ Custom Order — Made to Order in the UK
This is a custom-order product. Lead time is approximately 1 month from date of order. Order now to reserve your build slot, or contact us at info@ecgmusic.com for real-time availability, current lead times, and configuration options.

Powered by a five-valve preamp and six KT88 output tubes, the CTM-300 delivers 300 watts of headroom-rich, touch-sensitive tube power. Whether you're tracking in the studio, playing a large venue, or building a boutique rig that will last decades, this amp responds the way only a true all-valve head can — with warmth, depth, and dynamic feel that solid-state simply cannot replicate.

The tone stack is built around a classic passive EQ paired with Deep, Mid Shift, and Bright voicing switches, giving you a wide range of tonal territory from smooth vintage warmth to punchy, cutting modern bass. The Mellow function lets you move between clean character and full valve-driven growl at the push of a button.

For working players, the CTM-300 is built for real-world use: user-adjustable bias per power tube, a tube-driven transformer-derived DI, a tube-driven front-mounted effects loop, and a front-panel VU meter that doubles as a bias guide and fault indicator. The cabinet is constructed from 18mm marine-grade birch ply with heavy-duty handles and internal cooling — built to tour.

Why the UK-CTM-300

• UK-built in the Ashdown Custom Shop — hand-assembled, small batch
• 300W all-valve output via six KT88 power tubes
• Five-valve preamp for rich harmonic character at every volume
• Classic passive EQ with Deep, Mid Shift, Bright, and Mellow voicing
• Tube-driven DI (transformer-derived) and tube-driven effects loop
• Per-tube user-adjustable bias with front-panel VU meter
• 18mm marine-grade birch ply cabinet — built for stage and studio

The Ashdown UK-CTM-300 is the kind of amp head you build a rig around — and keep for life. Contact ECG Music to place your order or ask about current availability.