Barcus-Berry 4000PI Planar Wave Piano Sensor – 4000PI-U

Barcus-Berry 4000PI Planar Wave Piano Sensor – 4000PI-U

Marsoni

M251S

$199.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Barcus-Berry 4000PI Planar Wave Piano Sensor – 4000PI-UPlanar wave sensor for piano captures authentic tone with minimal noise. Barcus Berry's planar wave technology isolates true piano resonance while rejecting pedal and hammer noise, making this sensor perfect for concert grands and uprights alike. Piezo crystal planar wave sensor for grand and upright pianos Non responsive to unwanted pedal and hammer noise Sensitive to soundboard vibrations for true piano tone Easy installation with adhesive pads; no

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At first touch, these are the coldest pillowcases I own … but only for seconds. Once you actually lay on them, within seconds they adjust to your body temp, the heat feels trapped, my head begins to feel hotter than before I laid down - which has in turn caused me loathe these pillow cases. I hate that I have missed the return window. Would never buy again, would never recommend. My satin ones aren’t even this hot! I gave them the good ole 30-day try. Side sleepers - if you are like me and sleep on your side with arm tucked under pillow - flipping this pillow over in hopes of a cold side - forget it, it’s already hot from your arm.

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Reviewed in the United States on August 29, 2025

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Trevor Barton

Carnegie, US

★★★★★ 2

Ehh

Pills up rather quickly

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Reviewed in the United States on June 7, 2026

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Dorothy Gilbertson

Lexington, US

★★★★★ 3

Nice but dissapointing

So it sometimes stays cool but if it’s under a blanket and you have your body on it at all it will get warm but the spots you don’t use will get cool sometimes. I am very disappointed in the material though because it’s like my dry skin scratched the pillow case all over which makes me question it and I don’t think I would buy again.

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Reviewed in the United States on December 15, 2025

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Lane

Cuba, US

★★★★★ 5

Great price nice and soft material

Color: Dark Grey, Size: 1 Pack Body(20x54)-Regular

Says it's a cooling pillow case and it fits my pillow perfect and yes it's cooling

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Reviewed in the United States on May 27, 2026

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Stephenochi

Port Orchard, US

★★★★★ 5

Very cool pillow cover

Color: Dark Grey, Size: 1 Pack Body(20x54)-Regular

Great value for the price! Body pillow is very comfortable and silky smooth. Has a very nice very color. Pillow case is not heavy at all! Would recommend!

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Reviewed in the United States on April 1, 2026