Other brands (wind instruments and brass instruments) Kerry Whistle Low Whistle D Optima Tunable (Low Whistle in D) Mute for practice (silence) Maximum input sound pressure SPL:

Maximum input sound pressure SPL: ≥ 138dB

A year later

Good grain and the sound comes forward

producing a soft tone

Other brands (wind instruments and brass instruments) Kerry Whistle Low Whistle D Optima Tunable (Low Whistle in D) Mute for practice (silence) Maximum input sound pressure SPL:Kelly Whistle Low Whistle Optima Tunable D This is the Optima low whistle in D from Kerrywhistle, a whistle brand created by Phil Hardy of England. Phil learned how to make low whistles from Bernard Overton, the original creator of the low whistle, and continues to research and improve the whistles of the past while following in the footsteps of the original whistles. Although Optima has a somewhat rugged appearance, it has a soft, traditional sound