RTA 420 with Calibration files then the packs will be

then the packs will be easily available for everyone to pick of and

It is powered by a USB-C rechargeable battery and constructed in a high quality all metal housing ensuring it will be a reliable piece of equipment for years to come

Sennheiser compatible model fits EK IEM G4

and measurement performance to rival high-end microphones costing many times more

RTA 420 with Calibration files then the packs will beThe RTA 420 with Calibration Files are individually measured and serialized versions of the popular RTA 420. The calibration files are delivered via an included serialized QR, or they can be retrieved online via the RTA 420 Microphone Correction Curve Database by entering the serial number of the microphone. The Calibration file consists of 2 frequency response correction curves (free field narrow band and 1 3 Oct) and a detailed PDF report. RTA 420