AI Synthesis AI004 OTA Filter Full DIY Kit

AI Synthesis AI004 OTA Filter Full DIY Kit

Marsoni

M251S

$155.00

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

AI Synthesis AI004 OTA Filter Full DIY KitThe AI004 OTA Filter is a loving tribute to the late MS 20 filter design. Following the tradition of the first three eurorack modules, the AI001 Multiple,AI002 Mixer, and AI003 Looping ADSR, the module has a full how to build guide, and is available as a fully built module, full kit, as a PCB and Panel set, and as PCB only. Unlike some DIY companies that focus solely on providing kits, AI Synthesis has an educational mission and our kits and

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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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“Bought this for my dog Loki and it was an instant hit. He usually loses interest in toys pretty quickly, but this ball kept him entertained way longer than expected. The lights and movement immediately grabbed his attention, and he spent a solid hour chasing, pawing, and carrying it around the house. It’s durable enough for excited play, easy to charge/use, and even survived Loki’s dramatic ‘victory laps’ through the living room. Bonus: it tired him out enough for an actual nap afterward. Definitely worth it for high-energy dogs or curious pets.”

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Reviewed in the United States on May 14, 2026

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Chelsea

Birmingham, US

★★★★★ 5

Very durable and keeps my dog busy

Color: Blue

Kept my puppy entertained for a while when she usually doesn't play with a toy for more than 5 minutes.

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Reviewed in the United States on April 6, 2026

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Molly May

Charlottesville, US

★★★★★ 5

Terrier approved

I thought this was a creative, unique toy that brought some new and different fun to my dog. She really enjoys it. I've purchased both colors. They have stayed intact and kept their squeak for my smaller but normally very destructive dog.

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Reviewed in the United States on January 23, 2026

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Dhana Reichardt

Charlottesville, US

★★★★★ 1

Not bite proof

Color: Blue

Looked like it would be fun but was destroyed in one bite. Only the top small section holds treats.

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Reviewed in the United States on January 29, 2026

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