G.R.A.S. OP0024 Kit for Frequency Calibration of Flush-mount Microphone Sets


For frequency calibration of G.R.A.S. flush-mount microphone sets, you will in addition to a G.R.A.S. 14AA Electrostatic Actuator Amplifier need an Electrostatic Actuator, an Actuator Calibration Holder and an adapter for each microphone size. This kit contains these additional items.i.e. actuator, holder and adapters for 1/8" and 1/4" sizes. For 1/2" no adapter is used.

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


Electrostatic Actuator for Flush-mount Microphone Sets


Actuator Calibration Adapter for 1/4" Flush-mount Microphone Sets


Actuator Calibration Adapter for 1/8" Flush-mount Microphone Sets


Actuator Calibration Holder for  Flush-mount Microphone Sets

 Note: For 1/2", no adapter is used.

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