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This page last updated 30/10/2009
|The O'Brien Low D is a tunable anodized
aluminum whistle with a Delrin mouthpiece.
It has a loud clear tone- smooth and velvety.
The Delrin mouthpiece with its curved airway
ensures that moisture build-up will not be a
It is tunable by means of an extension at the
bottom of the mouthpiece that slides in and
out of the body tube.
Click here for a sound sample.
Here is another sound clip, recorded in an
abandoned railway tunnel.