B-STOCK - RM-500-EVO-II-Head

£665.00 £679.00

We have an exclusive number of these heads available. Used for demo and photography purposes, some minor wear and tear, no original packaging.
Introducing the Ashdown RM-500 EVO II, the ultimate amplifier for those who demand Ashdown's signature tone, uncompromising power, and unwavering reliability without the cumbersome weight. Weighing a mere 2.1KG (4.6lbs), this compact dynamo boasts an impressive 500 watts of power and class-leading quality and features.
One of the standout features is the onboard headphone preamp, transforming this amp into a versatile practice device for silent rehearsals. It accommodates both passive and active instruments, ensuring a pristine signal path to the input control, complete with Ashdown's trademark VU meter for precise level adjustment.
But that's not all – the RM-500 EVO II offers a wealth of tonal sculpting options. The 5-band EQ, onboard compressor, and tube-emulated overdrive give you complete control over your sound, while the sub-harmonic controls add extra depth. These features can be foot-switched using the FS-2 foot-switch (sold separately), offering exceptional flexibility.
The addition of a mute button, illuminated in cool blue, adds a touch of stage presence, and the matte alloy front panel eliminates reflections under bright lights. Whether you're performing on stage or perfecting your craft in the studio, the Ashdown RM-500 EVO II delivers unparalleled tone, power, and style.
For added versatility, the amp offers send and return sockets, a DI output for seamless integration with PA systems, and a Line Input for rehearsing with backing tracks. Partner it with Ashdown's Rootmaster EVO cabinets for a perfect match. With the RM-500 EVO II, your sound will be smooth, powerful, and ready for any stage or studio setting.

Please Note:

Direct purchases NOT available in the United States

Find your local dealer HERE

RM 500 EVO II - Clean Vs Driven

Sam Lord shows off the features and sounds of the Rootmaster 500 EVO II head.

Bass The World Review

Gregor and Lars take you through the features and sounds of the Rootmaster 500 EVO II head.


  • Power Output - 500 Watts
  • Power Requirement - 115-230 Volts
  • Speaker Outputs - 2 x Neutrik Speakon/Jack outputs
  • Frequency Response - -3dB @ 17Hz und 30KHz
  • High Instrument Input - Impedance 3.9m Ohms, input range 150mV
  • Low Instrument Input - Impedance 10k Ohms, input range 300mV -40V p-p
  • Line Input - Impedance 22k Ohms, input level 0dBu nominal
  • DI Output - 600 Ohm balanced, Level 0dBu nominal

  • Tuner Output - Impedance 22k Ohms, input level 0dBu nominal
  • Impedance - Minimum 4 Ohms
  • Signal to noise - Better than 80dB (EQ flat)
  • EQ - Bass +/-15dB @ 100Hz, Lo Mid +/-15dB @ 220Hz, Middle +/-15dB 2 660Hz, Hi Mid +/-15db @ 1.6kHz, Treble +/-15dB @ 7kHz shelving Deep +
  • Effects Send - Impedance 22k Ohm, Level 0dBu nominal
  • Effects Return - Impedance 22k Ohms, Input Level 0dBu Nominal
  • Distortion - Less than 0.5% THD
  • H x W x D (mm) - 86 x 314 x 235
  • Weight (kg/lbs) - 2.1/4.6

Ashdown rm500 evo ii head matt anodised alloy finish
Matt anodised alloy front panel
Ashdown have upgraded the amp’s front panel with a matt anodised alloy finish, replacing the previous polished stainless steel. This simple, yet observant modification makes reading your amp settings that bit easier when placed under bright stage lighting.

No more reflective surfaces.
Ashdown rm 500 evo ii head eq controls
Simple, powerful EQ
The Rootmaster EVO series’ pre amp now includes a passive and active input jack socket for use with high and low output instruments. The 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.
Ashdown rm500 evo ii head one knob compressor
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 is smooth as silk and will fill out any mix.
Ashdown rm 500 evo ii head over drive and sub controls
Overdrive & Sub
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.

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.
Ashdown rm500 evo ii head with Neutrik Jack and speakon sockets
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.

A pair of Neutrik Jack/Speakon sockets with a minimum 4 ohm load provides flexible partnering options with a dedicated range of Rootmaster EVO cabinets. The Rootmaster 500 EVO II can be used to power a single 8 ohm cabinet, a pair of 8 ohm cabinets or a single 4 ohm cabinet.
Ashdown rm 500 evo ii head headphone output
Headphone Output
The Rootmaster EVO II range now comes equipped with an on-board headphone preamp to allow for silent practice,which doubles up these gig-ready amplifiers as handy practice devices. The headphone preamp maximises the full sound potential of your headphones, so now your in ear sound can match the quality of your stage sound… given you have the correct (Meters Music) headphones, of course!
Shop For Meters Headphones


RM 500 EVO II User Manual

Recently viewed