The ultimate digital sound level meter should be smart, versatile and offer the latest in cutting-edge technology. It should not only be able to measure the intensity of the sound it reads with pinpoint accuracy but be forward-designed to ensure compatibility to ever-expanding firmware platforms. The best digital sound level meter should be rugged, offer single-handed use, in-situ sound power measurements and have a variety of powering options for ease of use. These should include AC, USB, external and internal batteries. The best class 1 sound level meter can perform the function of several different instruments, negating the need for multiple units and offering an enhanced ROI as well as ultimate convenience. The scope of use includes architectural, environmental and product noise analysis for class 1 sound measurements that meet or exceed the latest international standards.