NTi XL2 is a powerful, portable audio analyser, which, when coupled with a suitable microphone, becomes a sound level meter to Class 1 or Class 2 standard and a comprehensive acoustic analyser as well. Supplied with software which connects the instrument to a PC to transfer data or log data it is an all-in-one tool intended for applications such as live sound, sound installations, recording studios, broadcast environmental noise measurements service and repair centres.