SPD-S: Recommeded Footswitch. April 13, 2023 01:40 Updated Follow Boss FS-5U. Roland DP-2. Related articles SPD-S: Assigning a Function to an External Footswitch SPDS, SPD-S: Additional notes on Importing .Wav/AIFF files SPD-S: Restoring the patches and waves to the original factory settings SPD-1E/SPD-1K/SPD-1P: Battery Life for Continuous Use SPD-S: Pad Chase