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The 'Naked' Zero Autoformers - By Paul Speltz

Marsoni M251S
Sale price$599.50
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The 'Naked' Zero Autoformers - By Paul SpeltzOriginal toroidal autoformer. Can transform a 4 ohm speaker into an 8 ohm, 12 ohm, or 16 ohm speaker. Very helpful in matching speakers to amplifiers. It is well understood the importance of getting a well matched amplifier for your speakers, or vice versa; getting the proper speakers for your amplifier. Now you can make virtually any amp speaker combination work well together with the ZEROs. Bill has been using these autoformers in many set ups where
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Renae Halvorson
Los Angeles, US
★★★★★ 4
Value for your money
Style: EcoFetch
It's definitely different from the one I lost. It's taking me some time how to throw the ball correctly. It's a hit and miss but we are getting there. When I do get a good throw, it really wings it out there.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
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Verified Purchase
Will Brannies
Los Angeles, US
★★★★★ 5
Well worth it
Style: EcoFetch
Works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
V
Verified Purchase
Verucat
Birmingham, US
★★★★★ 5
Yes!
Size: Medium
Durable. Squeak doesn't last forever with my aggressive chewers but crinkle does. Best balls.
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Reviewed in the United States on September 28, 2025
J
Verified Purchase
JJ Fording
Charlottesville, US
★★★★★ 5
Balls
Size: Medium
My dog loves chasing these balls. He seems to love the squeak! They fit the chuck it stick perfectly, and are great replacements for the originals that came with the stick.
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Reviewed in the United States on February 7, 2026
S
Verified Purchase
Steve just Steve
San Leandro, US
★★★★★ 5
Nice set of balls
Size: Medium
The squeaker quickly became my dog’s favorite ball and has replaced the fuzzy tennis balls. My dog is a nonstop fetcher and these chuck it balls are durable and fun.
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Reviewed in the United States on January 9, 2026

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