Graphtech Acoustic 3+3 - PRN-2411-BO

Marsoni

M251S

$99.00

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

Graphtech Acoustic 3+3 - PRN-2411-BORATIO patented gear technology RATIO Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to High E 39: 1, 24: 1, 20: 1, 14: 1, 20: 1, 12: 1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO, a half turn is a semi tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. Gear ratio: unique for each string position one turn

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decent product. not as thick as typical sound deadening but definitely cheaper. and for my application, i didnt need a name brand thicker material. i am putting it on our heat and ac vent and intake pipes during our remodel. sound travels from room to room in our old house through these vents and pipes so a little sound deadening goes a long way

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Reviewed in the United States on June 2, 2026