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Ge0sync Synth TB-EF TB-303 Inspired Env & Filter Module

Marsoni M251S
Sale price$154.50
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Get it in 3 business days with 1 day shipping. Friday, May 29
Ge0sync Synth TB-EF TB-303 Inspired Env & Filter ModuleThe TB Filter Envelope module is inspired by the filter, envelope and accent circuits of the Roland TB 303. It copies the same 3 and a bit pole low pass filter and most importantly the resonance feedback loop. Like the original it has pots to control the Cutoff Frequency, Resonance and Envelope Modulation. These are true to the original in their operation. The envelope is controlled by a CV gate input that triggers the envelope and the filter
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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.
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4.4 ★★★★★
Based on 1883 reviews
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T.T.
Houston, US
★★★★★ 5
Love the glow
Color: Glow Green + Glow Blue
All I can say is I walk into a dark room and don’t have to look for my remote. The glow works perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2026
A
Verified Purchase
Allison
Louisville, US
★★★★★ 5
GLOWS and GRIPS
Color: Glow Green + Glow Blue
we (almost) never can’t find the remote anymore. love it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 21, 2025
A
Verified Purchase
Amazon Customer
Louisville, US
★★★★★ 4
Little snug
Color: Glow Green + Glow Blue
Item is as described. I had two issues. I am a male with big hands and strap will not fit. Other issue is the bottom is too snug fitting to allow charger to connect properly. Otherwise, all is good.
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Reviewed in the United States on November 19, 2025
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Verified Purchase
KitKat
Bozeman, US
★★★★★ 5
Good buy!
Color: Glow Green + Glow Blue
Great value and durable. Helps me find my remote and protects it. Comfortable to hold and I like the colors too.
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Reviewed in the United States on October 28, 2025
C
Chet Sommers
Port Orchard, US
★★★★★ 5
Nice sleeve for the remote
Color: Black not Glow + Navy not Glow, Color: Black not Glow + Navy not Glow
These fit well on my remote. Have a cut out for the charging port so no need to remove the case for charging. These give a little more girth to the remote thus making it easier to hold without it slipping out of my hand so easily.
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Reviewed in the United States on February 16, 2025

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