Ashdown RM500-EVO-III Rootmaster 500 EVO III Bass Head
SKU: 55501900708

Ashdown RM500-EVO-III Rootmaster 500 EVO III Bass Head

Sale price$494.55 Regular price$549.50
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Description

Ashdown RM500-EVO-III Rootmaster 500 EVO III Bass HeadRepresenting an elevation of Ashdown's acclaimed EVO series, the Rootmaster 500 EVO III equips bassists with a satisfying combination of muscular power, sonic versatility, and convenient portability. This brawny bass amp head delivers 500 watts of five star Ashdown tone that you can sculpt and mold to ear grabbing perfection with a responsive 5 band EQ. The RM 500 includes Ashdown's famous sub harmonic generator as well as a built in compressor,

Representing an elevation of Ashdown's acclaimed EVO series, the Rootmaster 500 EVO III equips bassists with a satisfying combination of muscular power, sonic versatility, and convenient portability. This brawny bass amp head delivers 500 watts of five-star Ashdown tone that you can sculpt and mold to ear-grabbing perfection with a responsive 5-band EQ. The RM-500 includes Ashdown's famous sub-harmonic generator as well as a built-in compressor, yielding thunderous, chest-thumping low end for days. You also get a valve-emulated drive for adding a hint of grit and warmth to your sound. The RM-500 boasts a handy cab sim DI output, along with a balanced, post-EQ XLR output option with reliable Neutrik connectors. The Ashdown RM-500 Rootmaster EVO III offers bassists exceptional amplification with lightweight portability and zero sonic compromises.

500 watts of premium Ashdown tone

Armed with a formidable 500 watts of output, the RM-500 EVO III delivers Ashdown's venerated signature tone, power, and reliability — all in a compact, lightweight bass amp head. The RM-500 puts you firmly in the driver's seat, thanks to its responsive 5-band EQ, enabling you to fine-tune your sound with pinpoint precision.

Bursting with tone-twisting features

Bassists are meticulous about tone, and given the level of onboard control available on the Rootmaster 500 EVO III, it's clear that Ashdown gets us. It all starts with Ashdown's popular sub-harmonic generator, a tried-and-tested gem that's guaranteed to shake the room and jiggle the rafters. The RM-500's built-in compressor ensures a full, consistent sound with truckloads of low-end punch. Need extra grit and warmth? If so, the RM-500's valve-emulated drive is on hand to accommodate you.

Ample DI options

The RM-500 EVO III provides bass players with exacting control over their onstage and front-of-house sound. For starters, it includes a balanced, post-EQ XLR output. Optionally, you can activate the RM-500's cab sim DI output, which includes customizable filters based on Ashdown's acclaimed ABM cabinets, along with options for a ported/sealed enclosure, speaker size, and horn.

Features

  • 500W bass amplifier head with a compact, lightweight design
  • Responsive 5-band EQ allows you to sculpt and mold your tone
  • Ashdown's popular sub-harmonic generator is guaranteed to shake the room and jiggle the rafters
  • Built-in compressor ensures a full, consistent sound with truckloads of low-end punch
  • Valve-emulated drive adds a hint of grit and warmth to your sound
  • Balanced, post-EQ XLR output is primed for front-of-house mixing
  • Cab sim DI output with options for a ported/sealed enclosure, speaker size, and horn
  • Effects loop makes integrating your pedalboard easy
  • Robust Neutrik connectors

Specifications

  • Type:Solid State
  • Number of Channels:Single channel
  • Total Power:500W
  • Effects:Valve-emulated Drive, Sub Harmonic Generator
  • Compression:Yes
  • EQ:5-band EQ, Shape switch
  • Amp Modeling:Speaker Sim
  • Inputs:1 x 1/4" (instrument), 1 x 1/4" (line)
  • Outputs:2 x SpeakON (4 ohms), 1 x XLR (Cab Sim DI out)
  • Headphones:1 x 1/4"
  • Effects Loop:Yes
  • Footswitch I/O:1 x 1/4" (drive, subharmonic generator)
  • Footswitch Included:No
  • Cooling System:Internal Fan, Rear/Side Air Vents
  • Power Source:Standard IEC power supply
  • Manufacturer Part Number:RM-500-EVO III
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 55501900708

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Size: 3X-Large, Color: Teal 02, Size: 3X-Large, Color: Teal 02
OMG! what a nice shirt. The pattern is awesome and the material is very soft and light weight. It is so breathable. Material has a bit of stretch so it very comfortable sitting or standing and does not wrinkle. I will be ordering at least on more in another color
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Reviewed in the United States on May 18, 2026
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Tyler
Phoenix, US
★★★★★ 5
Surprisingly awesome. Seriously. And I hate buying clothes.
Size: X-Large, Color: Black
I'm 6'1", 215 with large shoulders and chest. "Athletic dad-bod." Nothing fits me perfectly. I'm constantly stuck between an XL and XXL shirt, and a 37x31 pant---so literally nothing fits me and if you're a big guy, we all know that most polo shirts look like crap and fit like garbage bags. The shiny tone first made me skeptical. I wasn't even going to take it out of the package. But for $19, I said screw it. It fits really well. Not slim fit, but not "Ralph Lauren trash bag regular fit." It's soft like textured silk. It looks good and is the perfect length if you're 6'-6'3. And no--I know your first thought with the texture and shine is "does it look like a cheesy club shirt on a NJ Italian guy?" Shockingly, no...it's actually really nice (yeah--I had the same thought). It's stretchy. It's relatively form fitting, and it's cool to the touch. I immediately bought 3 more. For $19--just buy it. You won't regret it.
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Eswaran Venkatesan
Draper, US
★★★★★ 5
Good quality
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This Tshirt is comfortable and value to money. No need to IRON. Material quality I liked it.
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Niko Garcia
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Good shirt
Size: Medium, Color: Teal 02
Love the color and the design of the shirt. The small threads it’s made out of starting to come loose though. Now when look down at chest and stomach area, there are 15+ little strings that pop out of the shirt.
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Reviewed in the United States on April 25, 2026
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Greg
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Awesome shirt!
Size: Medium, Color: Blue, Size: Medium, Color: Blue
This is a nice shirt! Let me start by saying I am 6 foot 2, 195pounds with about a 40 inch chest, 42 inches on a good day! Ha ha. I ordered a medium because I wanted an athletic fit. The medium fits just right. For those wanting a normal, roomier fit I would recommend the large for my size. I’ll get a lot of compliments when I wear this shirt. What I like about it is that it is wrinkle free and looks great, I would not wear it on a super hot day with a snug fit. I do live in Florida, so that makes a difference. I also ordered the black one, both the blue and the black look very good for dress /casual. It’s polyester so it’s not super soft, which is OK. That also means it does not shrink.
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