At Ashdown, we know that not every gig pays the big bucks. Dedicated to busy, hard-working bass players on a budget, Rootmaster heads, combos and cabinets draw on all of our experience working with some of the biggest bands in the world to deliver workhorse reliability, creative tone-shaping, comprehensive recording and performing facilities plus the sonic slam you need to underpin your band’s performances night after night – all at a price that won’t break the bank.

For players who love the smooth, warm, bottom-heavy tone that only a 1x15” cabinet the RM-MAG-C115-420 delivers 420W of thunderous bass power into a single 15” Ashdown speaker. 

Simple, powerful EQ 

It all starts with an ultra-low-noise instrument input where the accompanying Input Level control helps you perfectly match the output of your bass. Five-band rotary tone controls act with surgical precision to provide total control over your sound, while a Shape switch instantly dials you in to a classic Ashdown tone setting, straight from the world-famous ABM.

One-knob Compression

Instantly adding warmth and body to your tone, this simple to use, great sounding compressor delivers a powerful, even sound to make sure your bass will fill out any mix.

Footswitchable variable overdrive 

With footswitchable flexibility, our tube-emulated overdrive can take your core bass sound and push it into warm overdrive through to distorted filth whenever you need to add extra grind and girth to your tone. 

Kick it down

Bringing extra depth and definition to your bass parts, the Sub-Harmonic Generator lets you dial in a sub-octave and kick it in via footswitch whenever you need the extra depth for those super-heavy Godzilla moments. 

Totally connected

If you want to use your favourite pedals or multi-effects, you’ll find send and return sockets on the back panel, along with a DI output for direct injection into the PA mixer or recording console and a Line Input (with front panel level control) so you can jam along with a backing track in rehearsal.

Demo Video


Power Output 420 Watt
Power Handling 230V
Speaker Configuration 1 x 15
Speaker Outputs 2 x Jack Sockets
Frequency Response -3dB @17Hz and 30kHz
High Instrument Input Impedance 3.9m Ohms, input range 150mV - 20mV p-p
Low Instrument Input Impedance 10k Ohms, input range 300mV - 40V p-p 
Line Input Impedance 10k Ohms, Level 0dBu nominal 
DI Output 600 Ohm balanced / level -20dBu nominal 
Tuner Output Impedance 22k Ohms / Level 0dBu nominal 

8 Ohm

Output Impedance Minimum 4 Ohm
Signal to Noise Better than 80dB (EQ Flat)
EQ Bass +/- 15dB @ 100Hz Lo Mid +/-15dB @220Hz Middle +/- 15dB @ 660Hz Hi Mid +/- 15dB @ 1.6kHz Treble +/- 15dB @ 7kHz
Effects Send Impedance 22k Ohm / Level 0dBu nominal 
Tuner Output Impedance 22k Ohm / Level 0dBu nominal 
Distortion Less than 0.5% THD
H x W x D (mm) 603 x 468 x 335
Weight (kg) 22


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