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 Meter Collection TDM — Surround Edition includes the Waves Dorrough stereo meters with all their advanced display features and functions, plus customized meters engineered especially for Surround production environments. Developed in association with Dorrough Electronics, Waves Dorrough Meters display both average and peak levels and in a single readout, making them the only meters which actually let you see the density of your sound.