Ashdown Rootmaster RM500 500W Bass Head

500-watt Bass Guitar Amplifier Head with 5-band EQ, Overdrive, Compression, Subharmonic Generator, Effects Loop, and XLR DI Output
Ashdown Rootmaster RM500 500W Bass Head image 1
Ashdown Rootmaster RM500 500W Bass Head image 1
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Ashdown Rootmaster RM500 500W Bass Head
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Full-featured, Lightweight Bass Head

Scores of discerning bass players rely on Ashdown amplifiers like the Rootmaster bass head for reliable tone and rock-solid performance. The 500-watt Rootmaster features a five-band EQ, overdrive, a subharmonic generator, and onboard compression for endless tweaking and tonal flexibility for the stage and studio. The Rootmaster makes a great rig for gigging and practice: an XLR output lets you run straight out of the head into a soundboard without a separate DI box, and a separate input with Line Mix level control lets you crank up backing tracks and jam along.

Ashdown Rootmaster 500-watt Bass Amplifier Head at a Glance:
  • An EQ built for tone tweakers
  • One-knob overdrive, compression, and subharmonics to shape your sound
  • Ashdown delivers the modern bass sound
An EQ built for tone tweakers

Ashdown bass amplifiers are known for their flexible equalizers. The Rootmaster has a five-band EQ specially voiced for bass guitar, with bands at 1.5kHz and 240Hz to tame growly mids and muddy low end, along with traditional bass, middle, and treble controls for broadband sculpting.

One-knob overdrive, compression, and subharmonics to shape your sound

A flexible EQ is only half of the tone-shaping power the Rootmaster has to offer. Live and studio musicians are sure to appreciate the simple one-knob compressor for adding extra punch and smoothing out leads. A flexible overdrive control lets you dirty up your sound with subtle grit to full-on fuzz. And for floor-shaking bass, you can dial in the Rootmaster's onboard subharmonics generator for an instant boost in low-end resonance.

Ashdown delivers the modern bass sound

With an artist roster that has included Adam Clayton of U2, James Jamerson Jr., and John Entwistle of The Who, Ashdown is responsible for shaping the sound of the modern bass. Ashdown amps serve up punchy dynamics with powerful, controlled lows and modern sheen. Sweetwater bassists like Ashdown amps for their durability to stand up to tour-grade abuse. Check out the Rootmaster for an amp with tones and features that won't let you down on the road or in the studio.

Ashdown Rootmaster 500-watt Bass Amplifier Head Features:
  • Compact, lightweight bass amplifier head
  • 5-band EQ for flexible tone shaping
  • 240Hz and 1.5kHz specialty bass bands clean up mud and tame honky midrange
  • Compressor adds punch, smooths out leads
  • Drive control dials in smooth saturation or aggressive fuzz
  • Subharmonic generator adds floor-shaking low resonance
  • Line Mix knob lets you connect and jam along with music
  • FX loop for routing rackmount gear and pedals
  • Drive and subharmonic effects can be controlled via optional footswitch (sold separately)
  • Ready to gig with speakON/phono speaker output and XLR DI output
Powerful tone meets rock-solid performance in the Ashdown Rootmaster bass amp!

Additional Media

Bass Guitar Amp Buying Guide

Tech Specs

Type Solid State
Number of Channels 1
Total Power 500W
Effects Subharmonic
Compression Yes
EQ 5-band EQ
Inputs 2 x 1/4" (passive, active), 1 x 1/8" (aux in)
Outputs 2 x speakON, 1 x XLR (DI)
Footswitch I/O 1 x 1/4" (FS-2)
Effects Loop Yes
Height 3"
Width 12.32"
Depth 8.8"
Weight 7 lbs.
Manufacturer Part Number RM-500-EVO

Customer Reviews

Based on 2 reviews
Write your review

ashdown rootmaster rm500w bass head

a lot of power it's smooth as well as punch one of the best bass head I have heard
Music background: metal

Ash down

Well Ashdown's a British company that's main man once was one of Trace Elliot's big wigs. Clearly Mark has brought his knowledge of low end happiness to his new company.This bass head is compact, lightweight, very versitile and loud! The quality of construction looks to be first rate and all the controls have a nice feel to them. The outer shell looks like you could drive a truck over it with no damage to the head. Ashdown has obviously made sure that it's Chinese factory is doing a good job as these heads appear to be built to last.Feature wise, it's loaded. You get a fantastic eq section, built in compressor, drive and sub unit. All of these sound great by the way. As far as volume goes, it's got plenty of wallop, especially if you use the built in compressor. As you turn the compressor up, not only does it keep an eye on your peaks, it also adjusts the volume as well keeping your output the same either with compressor or without, very cool!The drive and the sub controls are also very musical and useful as well.So if you're looking for a well made lightweight amp, be sure to give this amp a run through as its well worth the price. Oh and the serial number is on the barcode of the amp. it's not written in as some amp manufacturers do.

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See also: Bass Amp Heads, Ashdown, Ashdown Bass Guitar Amp Heads