Pricing and availability

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Average Price: $1,533

High-end/Boutique

$200

$801+

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Price History

Based on price data from 1 merchant for "Ashdown Engineering CTM-100 100 Watt Tube Bass Amplifier". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

The Ashdown Engineering CTM-100 100 Watt Tube Bass Amplifier epitomizes the marriage of classic charm and modern performance. Crafted with the discerning bassist in mind, this amp head is a testament to hand-built UK quality and tonal versatility. At its core are two KT-88 power tubes, providing the punch and headroom necessary for commanding small to medium-sized venues. Whether you're aiming for a smooth, clean sound or an overdriven growl, the CTM-100 has you covered.

The CTM-100 offers an extensive range of sound-shaping controls, including deep, mid-shift, and bright switches, allowing you to precisely tailor your tonal landscape. Its tube-driven, transformer-derived DI output ensures your direct sound remains pure and robust, making it ideal for both live performances and studio recordings. The dual inputs cater to both active and passive basses, offering flexibility and convenience for any player.

Constructed with an 18mm Marine-grade birch-ply cabinet, this amp head is built to withstand the rigors of touring while maintaining consistent performance, thanks to its internal cooling fan. The CTM-100 is not just about delivering amazing sound; it's about providing a reliable and rugged backbone for your bass rig.

Key Features:

  • 100-watt tube bass amp head
  • Two KT-88 power tubes for enhanced punch and headroom
  • Extensive tone-shaping controls with deep, mid-shift, and bright switches
  • Tube-driven, transformer-derived DI output for pristine direct tone
  • Dual inputs for active and passive basses
  • Durable 18mm Marine-grade birch-ply cabinet with internal cooling fan
  • Hand-built in the UK for unparalleled quality

Product specs

Brand Ashdown
Model CTM-100 UK Custom Shop 100-Watt Bass Amp Head
Finish Black
Year 2010s
Categories Bass Heads
Color Family Black
Electronics Solid State
Impedance 2 ohms
Number of Channels 1 Channel
Number of Inputs 2 Inputs
Output Power (Watts) 100
Power Tube Type None
Reverb None

FAQs

Is the Ashdown CTM-100 suitable for live performances?

Yes, the Ashdown CTM-100's 100-watt output is powerful enough for small to medium-sized venues, making it ideal for live performances where a robust bass presence is required.

What type of tubes does the Ashdown CTM-100 use?

The Ashdown CTM-100 does not use power tubes; it is a solid-state amplifier, which provides reliable performance without the need for tube maintenance.

How many inputs does the Ashdown CTM-100 have?

The Ashdown CTM-100 features two inputs, allowing you to connect different bass guitars or other compatible instruments simultaneously.

Can the Ashdown CTM-100 handle low impedance loads?

Yes, the Ashdown CTM-100 is designed to operate at a 2-ohm impedance, making it capable of driving various speaker configurations for optimal sound delivery.

Does the Ashdown CTM-100 have built-in reverb?

No, the Ashdown CTM-100 does not include built-in reverb, focusing instead on delivering a pure and powerful bass tone without additional effects.

Rabea Massaad

Rabea Massaad

Ashdown CTM 100 Bass Amp Review - With Dave Hollingworth

Video thumbnail for Ashdown CTM 100 Bass Amp Review - With Dave Hollingworth by Rabea Massaad

Ashdown CTM 100 Bass Amp Review - With Dave Hollingworth

Rabea Massaad

Rabea Massaad

Video thumbnail for Ashdown Engineering CTM 100 Watt All Valve Bass Head by Ashdown Engineering

Ashdown Engineering CTM 100 Watt All Valve Bass Head

Ashdown Engineering

Ashdown Engineering

Video thumbnail for Ashdown CTM 100 head & 4x10 cab | Bass Amp Review by Guitar Interactive Magazine

Ashdown CTM 100 head & 4x10 cab | Bass Amp Review

Guitar Interactive Magazine

Guitar Interactive Magazine

Video thumbnail for Musikmesse 2013 News: Ashdown CTM-100 Bass-Amp by musikmachen.de

Musikmesse 2013 News: Ashdown CTM-100 Bass-Amp

musikmachen.de

musikmachen.de

Video thumbnail for Full pedalboard demo using Ashdown CTM-100 by Andy Bassist

Full pedalboard demo using Ashdown CTM-100

Andy Bassist

Andy Bassist

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Ashdown Engineering CTM-100 100 Watt Tube Bass Amplifier.

User experience

  • The Ashdown CTM series, including the CTM-100, is noted for its scarcity in the market, making it a sought-after item for enthusiasts.

    Source

Comparisons

  • Ashdown CTM-100 offers a unique alternative to heavier all-tube amps like the Ampeg SVT, providing a similar tube tone without excessive weight.

    Source

Features and functionality

  • Ashdown's CTM series includes lower wattage options, such as the CTM-15 and CTM-30, which are ideal for at-home use and easier handling.

    Source

Value and pricing

  • The CTM-100 is considered a desirable model among tube amp enthusiasts, often highlighted for its availability challenges in both new and used markets.

    Source
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5.0 out of 5

Based on 2 Reviews and 3 Ratings

5 star
4 star
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1 star
filiplemberechts

Great amp - warm and powerful

I am using the CTM100 with an ampeg svt212 and it’s a great combo. The Ashdown’s tubes sound very warm and powerful. I had an Orange Terror Bass before but you really ‘feel’ the difference as the CTM100 has a tube endstage. Build quality is excellent and mine is made in the UK

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Genres:
skylinerr

the best pre sound

got this from a friend it had an iffy power circuit which is fine 100 watt even valve isnt enough for me at the moment do im slaving the pre side from this into the power side of my mesa head

Genres:

Artist usage

Add artist
See how Dave Hollingworth uses Ashdown Engineering CTM-100 100 Watt Tube Bass Amplifier

Dave Hollingworth

Guitarist, Bassist

Dorje

...
Verified via YouTube

Bassist of Dorje and drummer of Scratch Latin, Dave Hollingworth runs over the gear he's using currently on the new Dorje Album "Centered & One". As he goes over his pedals, the video shows Dave pointing over his shoulder and mentioning that he uses a DI Box to going into the Ashdown CTM-100 Tube Bass Amplifier.

Album Usage

The Ashdown Engineering CTM-100 100 Watt Tube Bass Amplifier has been featured on the following albums:

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