OBJECTIVE: Cochlear implant (CI) devices are fitted with two external processor styles-a behind-the-ear (BTE) or an off-the-ear (OTE) option. Although previous research has predominantly focused on speech recognition abilities between processor styles, the current study aims to examine the potential real-world functional differences between processor types. STUDY DESIGN: Retrospective case-control, matched at a 1:2 ratio. SETTING: Tertiary Otolaryngology Referral Center. PATIENTS: Patients with bilateral sensorineural hearing loss. INTERVENTION: Cochlear implantation. MAIN OUTCOME MEASURES: Cochlear Implant Quality of Life 35 Profile (CIQOL-35 Profile), and CNC word (CNCw) and AzBio sentence (quiet) recognition. RESULTS: A total of 36 patients were included (n = 12 OTE and n = 24 BTE users). The overall study population demonstrated improvements in CNCw (d = 1.9 [1.3, 2.4]), AzBio sentences in quiet (d = 2.1 [1.5, 2.6]), and medium-to-large effect sizes for domains of the CIQOL-35 (d range: 0.5-0.9) after cochlear implantation. Between-group analysis demonstrated that BTE users performed better in CNCw (d = 0.4 [-0.3, 1.1]) and AzBio quiet (d = 0.5 [-0.2, 1.2]) than their OTE counterparts. However, there were minimal differences identified between processor types based on CIQOL domain and global scores (d range: 0.04-0.2). CONCLUSION: BTE users may have a better speech recognition ability than their OTE counterparts. However, CIQOL domain and global scores are comparable between the two processor types. A prospective, randomized controlled trial will be needed to address the limitations of a retrospective analysis.