Radial Engineering PRODI Passive DI Box

Marsoni

M251S

$185.00

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

Radial Engineering PRODI Passive DI BoxRadial Engineering is a Canadian company know for making high quality solidly built audio tools. In particular great DI's. The Radial ProDI is a passive direct box that combines exceptional audio performance with solid dependable construction, making it the ideal general duty direct box for stage and studio. FEATURES: The heart of the ProDI is a custom wound Radial transformer. It features an exceptionally high 140k input impedance to reduce loading

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I bought this for my 2008 Prius to help with allergens since I drive with my dog often. I wanted something that fit right and actually improved the air inside the car. Installation took under 5 minutes with no tools, and it dropped in without any issues. The build quality feels solid, not flimsy. After installing it, the air smells cleaner and seems to reduce dust and allergens during drives. It hasn’t restricted airflow and is holding up well with daily use so far. Pros: Fit my 2008 Prius exactly with no adjustments I noticed cleaner air and fewer allergy issues while driving Took me less than 5 minutes to install with no tools Cons: A bit more expensive than basic filters I usually get

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Reviewed in the United States on May 5, 2026

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B McK

San Leandro, US

★★★★★ 5

Good filter

Cabin filter works in 2009 Prius.

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Reviewed in the United States on December 18, 2025

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Jerry

Fort Morgan, US

★★★★★ 5

Fits well

Filter works as advertised

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Reviewed in the United States on May 8, 2026

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Giovanna

Alexandria, US

★★★★★ 5

Good one

As described. Easy to install, good price.

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Reviewed in the United States on March 23, 2026

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Cipher

Belleville, US

★★★★★ 4

Good Enough

This doesn't fit precisely into place. You can see in the photo that the pleats just end with no frame on the sides to seal to the body of the housing. You can wiggle the end pleat into place but there's nothing holding it there so I don't know how long it will stay there. Not a big deal for me, but if you live on a dirt road, there could be enough air bypassing the filter that you may get a dusty car sooner. Price was fine, but I won't buy this filter again.

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Reviewed in the United States on January 13, 2025