After Later Audio SUM+INV

Marsoni

M251S

$69.00

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

After Later Audio SUM+INVTwo identical channels with two inputs and two outputs. For the first output the two inputs are summed (at unity) and the second output the sum (at unity) is inverted. The second channel is identical to the first channel but it normals channel one summed output to the first input. This enables a 3: 1 configuration with both a summed and inverted output. This is a great companion to the COCO system. Width: 2hp 12V: 10mA 12V: 10mA Includes box and

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They are easy to install and exactly as pictured. I find them to be lovely and uniform, and they can't with proper instructions and even extra pieces. I took away a star because they are described as "heavy duty" use, but the dowels used to mount the shelves are flimsy. Mine are mounted on combo of studs and drywall, the plates are secure and not going anywhere. The problem is the dowels themselves that fit into the corresponding holes of the shelf: they bend easily. I put three books and bookends on one shelf and watched it tip down. I did attach the bottom screws into the dowels I secure the shelf to the mounting brackets, but that's not going to save any items from sliding off as it bends down over time. I pulled the books immediately and decided to use these for decor only rather than any practical use. The stock photo suggesting lining these shelves with glass jars filled with flour, rice, and lentils is a terrible idea.

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Reviewed in the United States on August 12, 2025

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Amazon Customer

Chelsea, US

★★★★★ 5

Great Looking Shelves

Color: Oak, Size: 24"W x 6.7"D, 3 Pack

We love the floating shelves. They were easy to install and matched our island perfectly.

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Reviewed in the United States on February 27, 2026

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