Used Keeley Katana Mini Clean Boost (w/ Box)

Used Keeley Katana Mini Clean Boost (w/ Box)

Marsoni

M251S

$69.00

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

Used Keeley Katana Mini Clean Boost (w/ Box)Pre owned Keeley Katana Clean Boost Mini. In excellent condition, with the original box. MINI KATANA CLEAN BOOST! Keeleys oldest design made smaller and with tasteful updates including an additional feature. The Katana started back in 2002 within the Time Machine Boost. It was a dual class A JFET design that gave players and incredible boost and sounded so good they never turned off. In fact they often ran two or three on stages like John Mayer! The

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Used it as directed. Down to an eighth of a tank. Poured it in and added enough gas to get back to one half a tank. Wanted to get it mixed in really well. Immediately jumped on the interstate and ran 75 MPH for 40 miles. Stopped and filled the tank and when I restarted the engine, the light was off. Coincidence? Not a chance. Light had been on continuously for weeks. AutoZone said I needed a catalytic converter. Nope. One thing I found out the hard way. If your gas filler has a flap at the top, make sure it is easy to push aside. Mine had a little release button near the top that the filler hose would depress before the flap would release. Dumped the first bottle right on the ground. Twelve bucks wasted. No one to blame but me, I guess. Still a bargain, even at twice the price.

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Reviewed in the United States on February 17, 2026