Yamaha DX7 with Grey Matter Response E!

Marsoni

M251S

$300.00

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

Yamaha DX7 with Grey Matter Response E!Fully tested, perfect working condition. Unit has Grey Matter Response E! firmware installed. http: www. muzines. co. uk articles grey matter response e 2082 https: homepages. abdn. ac. uk d. j. benson pages dx7 manuals dx7 e card man. pdf http: forum. vintagesynth. com viewtopic. php? t=35775 About Used Items: All modules include a power ribbon cable and M3 screws. Please be aware that although all used items have been tested to work as they are

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
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This ball has been a great way to keep my dog entertained, especially when I can’t play nonstop. The movement really grabs their attention, and the 3 play modes are a nice touch depending on how energetic your dog is feeling. It works well both indoors and outside, and my dog loves chasing it around. It's not noisy at all and has thicker material so it cannot be easily chewed or ripped. The E-TPU material feels durable and has held up well so far, even with pretty rough play. It’s easy to use, simple to switch modes, and keeps my dog busy for a good amount of time without getting bored. Definitely a fun and engaging toy for medium to large dogs, especially if they need extra stimulation. Would recommend for supervised play!

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Reviewed in the United States on December 14, 2025