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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Just bought my second one for my German shepherd. 1st one I bought a year ago. She managed to pop it within a few days. She still was able to play with it by grabbing ahold of the straps. Takes it everywhere. We call it her tether ball. Should've seen her when we got the new one out of the box. Hasn't left it alone since.

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Reviewed in the United States on April 14, 2026