Superior Pickup Pattern. Dynamic Shock Mount. Wide Dynamic Range. Flat Top GrillePickup Pattern: Cardioid Response: 50Hz-16.5kHz Sensitivity: -72db Impedance: 600 Ohms Weight: 235g. The NX-7 is designed for optimal warmth and clarity. The outstanding pick-up pattern and sound quality make NX-7 ideal for vocal- drums- guitar amplifiers and other instruments. The dynamic shock mount keeps noise to a remarkably low level and the flat-top grille means the sound source is as close as possible to the cartridge.. instrument mic-instrument microphone