This is the Waves Digital Download version. We process digital download orders as quickly as possible. You'll receive your authorization code and download link by email (may take up to 24 hours). iLok USB Key required (see SKU # 241800). The Waves Dorrough Stereo Meter Collection TDM features models of Dorrough's most popular loudness meters: 280D/240D, 380D/340D, and 40AES/EBU. Developed in association with Dorrough Electronics, they provide precision loudness monitoring for every conceivable audio scenario. As Input Meters to attain optimal recording levels, as Group/Auxiliary Meters to achieve optimal group loudness, or as Master Output meters, the Waves Dorrough Meters do it all.