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1976 MU-TRON Bi-Phase Effect w/Paper Overlays - Used
1976 MU-TRON Bi-Phase Effect w/Paper Overlays - Used
1976 MU-TRON Bi-Phase Effect w/Paper Overlays - Used
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1976 MU-TRON Bi-Phase Effect w/Paper Overlays - Used

Marsoni M251S
Sale price$950.00
Pay 4 payments of $237.50 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
1976 MU-TRON Bi-Phase Effect w/Paper Overlays - UsedDescribed as the world's first dual phasor, the Mu Tron Bi Phase consists of two separate 6 stage phasers and two corresponding oscillators. Each circuit contains some additional tonal controls, allowing for versatility and person in generating this unique effect. Includes an A B footswitch to activate both phase circuits and three different paper instruction sheets, outlining how the user can create two speed, super, and or stereo sweeping effects.
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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]
  • Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 2287 reviews
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Product Reviews
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Verified Purchase
Susan K. Abruzzese
Whiting, US
★★★★★ 5
A bit flimsy but just as good as name brand chuck it
A bit flimsy but just as good as the name brand chuck it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 6, 2026
N
Verified Purchase
Natalie
San Leandro, US
★★★★★ 4
Good
exactly as expected
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2025
S
Verified Purchase
SkylaK
Draper, US
★★★★★ 2
Not worth it
Very colorful and my poodle liked the ball. It didn’t last 1 week. Horrible quality and not worth the money. My dog destroyed ball as soon as I turned my back. Would return it if it was in a returnable condition
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
S
Verified Purchase
S. Watson
Lowell, US
★★★★★ 5
Great buy
Our dog is so happy about this. He loves chasing a ball. We also love the fact that it is collapsible and only 12 inches. We travel a lot so it’s perfect for that. I’m enclosing a movie. I did about it for Amazon.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
E
Verified Purchase
4everirish
Chelsea, US
★★★★★ 1
Very disappointed
Unfortunately I ended up being very disappointed with this purchase, after about two weeks of use, it just stopped performing. Not sure what happened but it just stopped releasing the ball and I don't know why, it had no flexibility left to it. I'm not doing a very good job of trying to explain why it quit working but suffice it to say, it became useless after a couple of weeks. Broke my neighbors dog's heart, lol.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 20, 2025

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