SKU: 66262714515

Walrus Audio Mantle Analog Bass Preamp/DI, Black

Sale price$337.50 Regular price$375.00
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Description

Walrus Audio Mantle Analog Bass Preamp/DI, BlackSomething truly special just for bassists, we've got the high fidelity, all analog experience of the Walrus Audio Mantle Analog Bass Preamp and DI. The Mantle, a marvelous design straight from Walrus and bassist Ian Martin Allison, punches in with a pristine preamp design for bass guitars in particular. Proprietary components, a truly seamless playing experience, and easy connectivity all compound to elevate the Mantle to truly righteous levels.

Something truly special just for bassists, we've got the high-fidelity, all-analog experience of the Walrus Audio Mantle Analog Bass Preamp and DI. The Mantle, a marvelous design straight from Walrus and bassist Ian Martin Allison, punches in with a pristine preamp design for bass guitars in particular. Proprietary components, a truly seamless playing experience, and easy connectivity all compound to elevate the Mantle to truly righteous levels.

Everything in the Mantle Preamp starts with a special ingredient. At the heart of this preamp is a set of proprietary, custom-wound Sapphire transformers – designed and crafted by Walrus Audio. These high-quality, high-fidelity components are designed to be reminiscent of Neve consoles with their focus on formidable low-end and midrange force paired with an airy and articulate top end that hearkens to coveted API preamps. Totally, this customized design puts forward a tonal profile that is simple, classic, effortless, and primed for the stage or studio.

The Mantle Preamp is designed to be unencumbered and unambiguous in its operation. Centrally, the Mantle calls upon a single Gain control and a two-band EQ section with precisely delineated values to get your sound down to a science. Walrus went ahead with this pedal to focus on a more vivid EQ shaping experience that offers more than your average EQ frequency shelves. In addition, the precision offered by numerically-valued positions on the EQ and gain sweeps make the Mantle an excellent pedal for getting tonally exactly where you want and replicating such results when settings are changed. The Mantle's transformer-based gain structure spans between -6dB to +23dB.

Meant for the highest fidelity and most seamless integration on the stage or in the studio, the Mantle comes fitted with a number of additional playability and connectivity features. For one, an active/passive pad introduces a -10dB input pad meant for use with active pickup basses or instruments with existing high-output preamps for preventing overloads in the input stage. For another, the Mantle features a balanced XLR output for use in DI out situations. This XLR out can be used simultaneously with the pedal's 1/4" instrument out for parallel output in recording or performance scenarios.

A preeminent preamp for bassists, the Mantle is a heaven-sent for any and every setup, style, and sound. Take it up, make your mark.

  • All-analog preamp collaborative design with bassist Ian Martin Allison
  • Proprietary, custom-wound Sapphire transformers
  • Gain control and two-band EQ section
  • Switchable active/passive input pad for active pickup basses and other output preamps
  • Balanced male XLR DI out connection with ground lift switch
  • Parallel 1/4" instrument out and XLR out operation
  • Standard nine-volt DC center negative power requirement at 500mA
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: 66262714515

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4.4 ★★★★★
Based on 16 reviews
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katsura
Whiting, US
★★★★★ 5
Perfect fit for 2020 Subaru Outback
Fit my 2020 Subaru Outback perfectly. 5-minute install. Works great. My previous cabin filter was scary to see.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025
R
Verified Purchase
Richard Gopen
Lowell, US
★★★★★ 5
Good, inexpensive replacement filter
I've used these filters for a couple years (four replacements) on my Subaru Crosstrek, and they seem to do the job well, probably as well as the original. I generally remove and clean them every three months, and replace them every six.
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Reviewed in the United States on May 7, 2026
J
Verified Purchase
Jim Wallace
Dallas, US
★★★★★ 5
Save some money by doing your own cabin filter change! (You won't notice a difference).
So, one day I was getting an oil change at the dealership, and the associate told me that cabin filter was pretty dirty, which I believed because of the places I take the car, and she said that they could change it while they were finishing up the rest of their inspection, since they already had it apart. I asked her "How much?", and then we both had a laugh when she said "$90." I told her I'd take care of it. It took two days for Amazon to get a replacement filter to me, twenty minutes to watch a You Tube video showing how to replace the cabin filter on my car (I watched it twice), and then about twenty-five minutes to replace the filter itself--I keep a messy glove compartment, so a good portion of the time was loading and unloading that nightmare. In the end, under $15 for the filter, maybe 45 minutes to watch and replace, and the cabin filter hasn't been this good since I first bought the car. This replacement version was as good as the OE filter, fit exactly the same, there's no difference in airflow that I can tell, and so far (6 months later), it seems to be holding up pretty well. We'll see what it is like after a year. I did get the oil changed about a week ago, and the technician didn't raise any alarms about the filter, so everything seems to be working. $90 for a new filter? You can do it yourself cheaper.
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Reviewed in the United States on April 6, 2026
C
Verified Purchase
chad martin
Charlottesville, US
★★★★★ 4
Fresh Air Upgrade for My 2024 Impreza
Installed this in my 2024 Subaru Impreza, and it fit perfectly—no issues. The air smells noticeably cleaner now, and it took less than 10 minutes to swap out. The carbon and HEPA filtration does a great job clearing out odors, dust, and pollen—definitely an upgrade over the factory filter. The build feels sturdier than the OEM version, though it does have slightly fewer pleats. Might mean it needs replacing a bit sooner, but for the price and performance, I’m fine with that tradeoff. If you’re looking for a quick, affordable way to improve your cabin air, this one’s a solid pick. 
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Reviewed in the United States on June 26, 2025
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Gram21
Cuba, US
★★★★★ 5
Well built, good fit.
I like it so well, I just bought two more to keep on the shelf for when the price doubles. Seems better built than oem, but I don't know how you can judge the filtration; seems good though.
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Reviewed in the United States on May 6, 2026

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