Shure A89M-SH Shoe Mount Black Lights & Strobes Peak frequency bin readout shows

Peak frequency bin readout shows you frequency range of the first harmonic (fundamental frequency) in the signal

vibrant blue foam

As an addition

sending your amp into creamy overdrive

Shure A89M-SH Shoe Mount Black Lights & Strobes Peak frequency bin readout showsShoe Mount Features : Shoe mount provides isolation against handling noise for VP89S and VP89M End Address Shotgun Condenser Microphones. The mount features a soft feel grip in the clip to prevent the microphone from twisting or slipping. Patented Lyre technology provides excellent isolation against handling noise. A soft feel grip is molded into the clip to prevent the microphone from twisting or slipping.