Evaluating the Effect of Spinal Cord Stimulation Frequency on Fast-Acting Sub-perception Therapy (FAST) for Chronic Pain

Inclusion Criteria: * The subject is between 18 and 75 years of age when written informed consent is obtained. * Complaint of persistent or recurrent low back pain, with or without equal or lesser leg pain, for at least 90 days prior to Screen. * Received at least 90 days of documented pain management care to address the primary pain complaint, prior to Screening (e.g. medication, physical therapy.) * Diagnosed with chronic neuropathic pain of the low back and legs (of neuropathic origin only). * Eligible candidate for SCS from a psychological and psychiatric standpoint as determined prior to Baseline Visit, per site's routine screening process No back surgery within 6 months prior to Screening. * Average low back pain intensity, during the position/activity, which routinely causes worst pain, of 5 or greater on a 0-10 numerical rating scale during Baseline period based on eDiary. * If taking prescription opioids for primary chronic pain complaint (low back and/or leg pain), must have been on a stable prescription (same drug(s) and dose(s)) 30 days prior to Screening to a total of less than 180 mg Oral Morphine equivalent. * Willing and able to comply with all protocol-required procedures and assessments/evaluations (e.g. willing to comply with opioid prescription lock from the Baseline visit through End of Rate Randomization and protocol required stimulation parameter locks, complete daily eDiary). * If female of childbearing potential: not pregnant, as evidenced by a negative pregnancy test at Screening. * Subject signed a valid, IRB-approved informed consent form (ICF) provided in English. Exclusion Criteria: * Significant cognitive impairment at Screening that, in the opinion of the Investigator, would reasonably be expected to impair the study candidates to participate in the study * Have untreated major psychiatric comorbidity, serious drug related behaviour issues. * Previous spinal cord stimulation trial or is already implanted with an active implantable device(s) (e.g. pacemaker, drug pump, implantable pulse generator). * Participating (or intends to participate) in another drug or device clinical trial that may influence the data that will be collected for this study * Currently on any anticoagulant medications that cannot be discontinued during perioperative period * Current condition associated with risk of immunocompromised that might increase risk of infection during study duration. * A female who is pregnant, is breastfeeding, or is of child…