1.5 Postoperative Procedures: 1.5.1 Device Activation The participants will be fit with Freedom speech processors using a behind-the-ear (BTE) controller or body level controller. Speech processing strategies used with this device will include ACE (RE), ACE, CIS (RE), CIS or SPEAK, which are all FDA approved for children . Threshold (T) and comfort (C) values will be measured for the electrical stimulation for each of the channels (10 on the Iowa/Nucleus 10/ 10 mm and 24 on the Nucleus Freedom). Impedance telemetry results using common ground (CG) and monopolar (MPI , MP2 and MP 1+2) stimulation modes will also be recorded . This information will be used to program the speech processor and also to monitor the device for possible degradation of function and/or damage to neural elements.