The National Acoustics Laboratories' (NAL) and Desired Sensation Level (DSL), hearing aid fitting strategies will be used, depending upon the age of the candidate (Dillon, 1999; Scollie, et al, 2005) to assess the degree to which real-ear or coupler- predicted targets are met for each patient. These fitting methods are based on extensive research and clinical trials with patients with sensorineural hearing loss and are the most widely used fitting formulas in clinical use.