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Description
abm pedal steel Ashdown Engineering ABM-EVO IV Dual VU Rack Bass Amp HeadAshdown Engineering ABM EVO IV Dual VU Rack Bass Amp Head Preowned Elevate your bass game to new heights with the Ashdown ABM 600 Dual VU Rack Head. Recognizable by its glowing VU meter, this industry standard powerhouse has evolved into its fifth incarnation, the EVO IV. Featuring a class leading preamp, a robust 600W power stage, and a new 9 band EQ, it's designed for the road, built with a 3U rack chassis made from 2mm mild steel. The Variable
Ashdown Engineering ABM-EVO IV Dual VU Rack Bass Amp Head - Preowned
Elevate your bass game to new heights with the Ashdown ABM 600 Dual VU Rack Head. Recognizable by its glowing VU meter, this industry-standard powerhouse has evolved into its fifth incarnation, the EVO IV. Featuring a class-leading preamp, a robust 600W power stage, and a new 9-band EQ, it's designed for the road, built with a 3U rack chassis made from 2mm mild steel.
The Variable Valve Drive Plus takes you from clean to overdrive with precision, while the 9-band EQ lets you sculpt your sound. With an Input VU meter, you can quickly find your instrument's sweet spot. The One Knob Dynamic Compressor and Sub-Harmonic Generator add depth and punch to your bass, and professional connections ensure flexibility.
Elevate your bass performance with the ABM 600 Dual VU Rack Head. Unleash the beast.
- Power Output - 600 Watts
- Power Requirement - 115-230 Volts
- Speaker Outputs - 4 x Jack/Speakon outputs
- Frequency Response - -3dB @ 17Hz und 30KHz
- High Instrument Input - Impedance 10k 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, Level 0dBu nominal
- Impedance - Minimum 4 Ohms Per Side
- Effects Send - Impedance 22k Ohm, Level 0dBu nominal
- Effects Return - Impedance 22k Ohms, Input Level 0dBu Nominal
- Output Tubes - 1 x 12AX7
- H x W x D (mm) - 135 x 474 x 320
- Weight (kg) - 12.5
Variable Valve Drive Plus – from zero to rock hero!
Our Variable Valve Drive preamp section has also been upgraded in EVO IV. Delivering more current to the 12AX7 tube enables more drive and harmonic content than ever before, enabling players to dial in a sound from pristine clean, to the fattest, fullest bass overdrive currently available. The Drive level can be preset and kicked in and out via footswitch, providing access to a huge range of clean, warm and overdriven tones.
The best EQ in the business, just got better!
Bassists plugging into EVO IV will be greeted straight away by the flickering of the new Input VU meter, allowing them to quickly find the sweet spot for their instrument. From there, EVO IV features a sophisticated 9-band EQ, with familiar Bass, Middle and Treble controls and six sliders providing precision cut and boost at 100Hz, 180Hz, 340Hz, 1.3KHz, 2.6KHz and 5KHz. The EQ can be switched in via footswitch taking the player from a flat fretless sound to their favourite EQ setting instantly. The NEW 9-band EQ is a revelation of sonic perfection and will surprise older ABM users.
One knob compressor
Other ABM favourite features are retained in EVO IV, including Ashdown’s famous One Knob Dynamic Compressor sub octave note for huge bass tones. Kick it in and this simple to use, great sounding compressor delivers a powerful, even sound, guaranteed to help your bass fill out any mix.
Sub-Harmonic Generator
Once heard – never forgotten. The ABM Sub-Harmonic generator adds an octave below the notes being played bringing fullness to any bass part. The Sub level is independently controllable, letting you dial in anything from a subtle hint of deep bass to a full-on subterranean funk.
Professional Connections
Not that you'd expect any less, ABM is loaded with connectivity. A tuner output, Line out, transparent FX loop and a Line Input for the connection of an external sampler or sound source. Output muting cuts the signal from the DI output but leaves the tuner output 'live', allowing the player to tune up in silence.
Flexible Footswitching
Paired with our FS-4 footswitch (not included) the ABM comes alive for onstage use, enabling on-the-fly tonal gearshifts. With footswitchable Valve Drive, Compression, EQ and Sub Harmonic Generator, ABM puts dozens of sound combinations at your feet, without so much as an effect pedal in sight.
| Power Output | 600 Watts |
| Power Requirement | 115-230 Volts |
| Speaker Outputs | 4 x Jack/Speakon 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, Level 0dBu nominal |
| Impedance | Minimum 4 Ohms Per Side |
| Effects Send | Impedance 22k Ohm, Level 0dBu nominal |
| Effects Return | Impedance 22k Ohms, Input Level 0dBu Nominal |
| Output Tubes | 1 x 12AX7 |
| H x W x D (mm) | 135 x 474 x 320 |
| Weight (kg) | 12.5 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.3 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Worth it!
Size: Queen(Pack of 2)
These pillows are amazing and very soft and comfortable. They came nicely packaged and I let them sit out for just a few hours before using them and that was plenty of time! They come with the cooling cover and fit a standard queen sized pillowcase. The material expands well and does not have any weird smells. 10/10 well worth the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 5
Miracle pillow
Size: Standard(Pack of 2)
Best pillow I’ve ever had. I have been using this since December 2024 and it still hasn’t gotten flat. It is amazingly comfortable and solves all my neck issues for a side sleeper. My head never gets hot either. I’ve recommended this to my friends and they’ve had success with it as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
★★★★★ 4
Really wanted to love these
Size: Queen(Pack of 2)
I really wanted to love these but they gave me a stiff neck. I haven't slept with a pillow since buying these. They are firm except where you lay your head. It just deflates there. I expected it to sink in to match the curve of my neck but it was more than I could handle. My head ended up in a valley between the two ends of the pillow. The price was good, zipper worked fine, it looks as advertised and the pillows are good quality. The cooling part works, its just not what I needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
★★★★★ 5
best pillow I have ever bought.
Size: Queen(Pack of 2)
most comfortable pillow I have ever bought. It seems very well put together so I believe that it will last a long time. Very happy with the purchase. I do think the weight of the pillow will surprise many people because while it is quite heavy, it is very firm and extremely comfortable. Great value.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
I paid for the product and it’s GOOD 👍🏽
Size: Queen(Pack of 2), Size: Queen(Pack of 2)
Honest review to help your decision. These are a bargain at two for one. I paid almost $30 for one at a local retailer and it’s already flattened after 7 months.
This product arrives vacuum sealed with the cooling pillow covers separately (separate so you can wash before using). They are loaded with memory foam which I found pleasing. I chose to leave all of the foam in because I’m sure it’ll flatten sometime in the future. I’ve been using these for TWO MONTHS now and they have not flattened.
Easy to mold and fluff, soft and they are added support for my back up pillows. I cannot attest to any type of pain relief because I have not experienced that with these personally. I do feel my sleep is better so my tension headaches have lessened.
The cooling hex layer is on the cover NOT the actual pillows. I’m sure everyone knows that memory foam gets really hot 🥵 but the cooling covers on these help minimize that. It actually feels cool to the touch like a gel product. I find the quality to be exceptional.
All in all, give it a shot.
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Reviewed in the United States on September 16, 2025
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