I have a variety of air tools but no Proto Branded ones. My Snap-On 1/2" and 3/8" impacts have a lever you can move to make them quieter. But it greatly reduces the hammer force which is marginal at full power and loudness. In general, I think Snap-On air tools are very overpriced with mid-level performance. This is especially true of the Blue Point line, made in China and just a step or two above Harbor Freight stuff. I have a 3/4" IR impact. Fairly quiet and a real brute. I have never had a fastener it wouldn't either remove or break-off! Very heavy tool though. The Proto impacts pictured look light and compact. AirCat is another brand that has powerful, quiet, light air tools. Some are made in the US, some imported.
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