G.R.A.S. OP0023 Kit for Sensitivity Calibration of Flush-mount Microphone Sets


For sensitivity calibration of our flush-mount microphone sets, you will in addition to a Pistonphone (e.g. G.R.A.S. 42AP) need an adapter for each microphone size.
This kit contains adapters for 1/8”, 1/4" and 1/2" sizes which fit into the G.R.A.S. RA0048 1/2" coupler. This coupler is included with G.R.A.S. Pistonphones.

Performance & Warranty

G.R.A.S. accessories are made of stainless steel, alloys and high-quality composites. These items are covered by a 2 year warranty respecting their intended use.
On consumables like batteries, cables and windscreens we offer a 6 month warranty.

Included items


Pistonphone Calibration Adapter for 1/2" Flush mount Microphone Sets


Pistonphone Calibration Adapter for 1/4" Flush mount Microphone Sets


Pistonphone Calibration Adapter for 1/8" Flush mount Microphone Sets

G.R.A.S. Sound & Vibration reserves the right to change specifications and accessories without notice.