CTM-300 Head
Ashdown ctm 300 head right
Ashdown ctm 300 head left
Ashdown ctm 300 head back

Ashdown Engineering

CTM-300 Head

£2,999.00

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

Hand-built in the UK Custom Shop, the CTM-300 delivers 300 watts of all-valve power through six KT88s and a five-valve preamp, offering everything from smooth ’60s warmth to roaring ’70s growl and modern punch. Housed in rugged marine-grade birch ply with heavy-duty handles, it features Deep, Mid Shift, and Bright switches, a user-adjustable bias with dual-function VU meter, and individually fused tubes for easy maintenance. With a tube-driven DI and front-mounted FX loop, the CTM-300 combines vintage character with modern reliability - built for bassists who demand uncompromising tone and power.

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 Handling: 750 Watts
• Power Requirement: 115–240 Volts
• Preamp Tubes: 1 × ECC83, 1 × ECC832, 1 × ECC99, 2 × ECC82
• Output Tubes: 6 × KT88

CONNECTIVITY & I/O

• Speaker Outputs: Speakon/Jack
• High Instrument Input: 450mV
• Low Instrument Input: 150mV
• DI Output: Valve-driven transformer derived
• Effects Send: Jack
• Effects Return: Jack

PERFORMANCE

• Frequency Response: 35Hz – 18kHz
• Output Impedance: Minimum 2 Ohms
• EQ: Passive section – Bass, Middle, Treble + Shape push buttons

DIMENSIONS & WEIGHT

• H × W × D (mm): 266 × 590 × 336
• Weight: 28.2 kg

Classic All-Valve Power

The CTM-300 delivers classic all-valve tone with a five-valve preamp configuration and a fully-loaded power section of 6 x KT88 output tubes. This combination provides the grunt, warmth, and headroom that bassists demand when only the best will do. Built for serious players, the CTM-300 is the amplifier you call upon when power, character, and reliability are non-negotiable.

Flexible Tone Shaping

Covering a wide sonic spectrum, the CTM-300 transitions effortlessly from mellow ’60s-style bass tones to aggressive ’70s growl and into thick, modern power. The Mellow button engages warm, smooth tones, while standard tone controls provide highly musical responses. Additional Deep, Mid Shift, and Bright switches allow precise tailoring to suit any setting. With its fully interactive passive EQ circuit, the CTM-300 encourages bold adjustments, letting you carve out exactly the sound you need.

Tube Life Preserver

To keep your amp sounding great and reduce trips to the tech, the CTM-300 incorporates user-adjustable bias controls for each individual power tube. The dual-function VU meter makes bias adjustment simple and also indicates tube or fuse failure. With individually fused and user-replaceable output tubes, players can carry out maintenance quickly and confidently - ensuring their amp stays roadworthy and consistent for years to come.

Professional Connectivity

The CTM-300 goes beyond raw power by offering a tube-driven, transformer-derived DI output with isolated ground for pristine, reliable signal in both studio and live environments. The front-mounted tube-driven effects loop ensures tonal purity when integrating pedals or processors. Together, these professional features make the CTM-300 as versatile as it is powerful, equally at home in the studio or commanding the stage.

Warm-Up and Power-Down Procedure

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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