Sustain is "Incredible", way beyond 'belief' !
A thousand bucks for something "made in china" ?
Pic of whistle~MIC
https://images.app.goo.gl/gTwqdgyXzNMFJ64g9
Designed by Otto D'ambrosio for TAFKAP/Prince w/patent on neck-to-body connection , 0wned mine for years.
The treble is too pronounced and no bass , sounds like shit ! Mao Tse Tung never heard one of these .( Subjective)