Between touring for The Blues, Mitch Grainger focused his attention on inventing a harmonica microphone that enables him to perform and record his own form of Blues Rock with a full band, yet without compromising on the sound of the harmonica, in high volume, amplified situations, and in September of 2017 Mitch Grainger was awarded a US Patent for his invention "Harmonica Microphone with improved Control of Audio Feedback", known commercially as Dyna-Mic.

Dyna-Mic was successfully launched on Kickstarter in 2018, and first used on stage by Bob Dylan during his 2018 New Zealand stadium tour.
Between touring for The Blues, Mitch Grainger focused his attention on inventing a harmonica microphone that enables him to perform and record his own form of Blues Rock with a full band, yet without compromising on the sound of the harmonica, in high volume, amplified situations, and in September of 2017 Mitch Grainger was awarded a US Patent for his invention "Harmonica Microphone with improved Control of Audio Feedback", known commercially as Dyna-Mic. 
Dyna-Mic was successfully launched on Kickstarter in 2018, and first used on stage by Bob Dylan during his 2018 New Zealand stadium tour.
Mitch Grainger