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Description
MXR M281 Thump Bass Preamp PedalThis pedal combines the tone sweetening magic of the Echoplex Preamp with a three band EQ and midrange frequency adjustment so that you can dial in the perfect bass tone to punch up a solo, boost your signal in a live mix, sculpt more edge into the sound of a passive bass, and more. The MXR Thump Bass Preamp is a tone sweetening, signal boosting, and altogether groove enhancing machine. This pedal was conceived when the MXR design team and Dunlop's in
This pedal combines the tone-sweetening magic of the Echoplex® Preamp with a three-band EQ and midrange frequency adjustment so that you can dial in the perfect bass tone to punch up a solo, boost your signal in a live mix, sculpt more edge into the sound of a passive bass, and more.The MXR Thump Bass Preamp is a tone-sweetening, signal-boosting, and altogether groove-enhancing machine. This pedal was conceived when the MXR design team and Dunlop's in-house bass players discovered that the Echoplex® Preamp's sonic secret sauce made for just as delectable a pairing with bass as it does with guitar. Using that circuitry as a foundation, the MXR team added a simple yet potent tone-shaping interface so that you can dial in the perfect bass sound for the stage and the studio.
Crafting the sound you need is easy. The Echoplex Preamp circuit conditions your signal with a carefully balanced EQ profile, and this pedal's tone controls let you take it from there. The Treble and Bass knobs cut or boost frequencies at 8 kHz and 40 Hz respectively, while the Mid knob cuts or boosts the midrange as set by the Frequency knob, from 250 Hz to 1 kHz. This range of frequencies was selected to give players maximum flexibility and minimal fuss when refining their bass signal.
Specifications
Input Impedance: 1 MΩ
Output Impedance: 100 Ω
Tone Controls
Bass: + 15/-7 dBV, 60 Hz
Mid: +/-16 dBV, 1 kHz
Treb: +/-10 dBV, 4 kHz
Freq Sweep: 250 Hz to 1 kHz
Noise Floor: -95 dBV
Bypass: True Hardwire
Current Draw: 9 mA
Power Supply: 9 Volts DC (not included)
Shipping Notes
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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]
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4.3 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Attractive well made and balanced
Color: Dark Mocha, Size: 3 Panel, Color: Dark Mocha, Size: 3 Panel
It would be extravagant to purchase another 3 panel divider but had gotten it so I didn’t have to look at the hallway from where I sit in the living room. It is stable. The taller size comes with a hefty shipping fee equal to the purchase price. This blocks the hallway and is attractive. My cat can push one panel to get through the passage without tipping the screen. The walnut color is a complement so I will keep it (even though I think it is overpriced
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Great litter box screen
Color: Dark Mocha, Size: 3 Panel
The short height is great for screening liter boxes. It is very sturdy.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
Great for hiding items!
Color: Black, Size: 3 Panel
This is great! I use it to hide my cats litter box in a small apartment. Put a plant in front of it and no one knows what it is hiding.
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Reviewed in the United States on May 30, 2026
★★★★★ 4
Good quality
Color: Dark Mocha, Size: 3 Panel
Was shorter than I realized, ended up returning. Product was good quality however
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Reviewed in the United States on November 18, 2025
★★★★★ 5
Light Weight and Affordable Office Decor
Color: Dark Mocha, Size: 3 Panel
I always read reviews before purchasing- so I understood this was going to be a small, light weight tri-fold. It is not meant to be extremely durable- so it wouldn't be great to have around children or animals - but is functional for certain situations. I use this as a divider between my work from home desk and my bed during the day and it is the perfect tool to keep my brain in "work mode", and not sleep mode.
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Reviewed in the United States on April 24, 2026