The pistonphone adapter RA0157 makes it possible to calibrate an Ear Simulator G.R.A.S. RA0045 with KEMAR Ear Canal Extension using a Pistonphone.
Quality & 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 windscreen we offer a 6 month warranty.