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

Marsoni M251S
Sale price$950.00
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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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  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.0 ★★★★★
Based on 248 reviews
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C.W.
Carnegie, US
★★★★★ 5
Easy to assemble. Still used for over a year 🙌🏾
Color: White, Size: 6 Panel
Everything is perfect! I would buy again in other colors and heights if I need additional separation in the basement.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026
A
Verified Purchase
Amazon Customer
Belleville, US
★★★★★ 3
Cheap Garbage
Color: Black, Size: 4 Panel
This item is just cheap crap. Shoddily put together, shoddy materials, and looks cheap. If you’re just putting it in a space that you don’t really care that it’s cheap, then it might be fine for what you need. But don’t expect much.
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Reviewed in the United States on April 15, 2026
A
Verified Purchase
Angel
Birmingham, US
★★★★★ 5
Keeps areas separated
Color: Black, Size: 6 Panel
Item arrived quickly. I use this to keep my cats out of a part of the cellar. Works great. They've figured out how to slip through side. I made a panel that covers those spots. Still the best item to keep area separate.
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Reviewed in the United States on January 9, 2026
C
Verified Purchase
Coammom
Lowell, US
★★★★★ 5
Nice panels
Color: Black, Size: 6 Panel
Gives good coverage, nice dark panels. Easy to assemble, light product and sturdy. I will recommend this item! Completely covers the back shelves that are for employees only.
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Reviewed in the United States on August 31, 2025
N
Verified Purchase
Never leave your house
West Palm Beach, US
★★★★★ 5
good product
Size: 6FT*6FT, Color: Bright Yellow, Size: 6FT*6FT, Color: Bright Yellow
work beans sturdy and versitle easy install people said it bad because they are dorf hellen Kellers
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Reviewed in the United States on April 19, 2026

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