Thanks for the reply! I have two FS5U’s that I plan to use. I’ll use the other for another switch. I’m glad to hear I can use one for tap tempo, that frees up one switch on the HXS. I’ve tried and asked about using them with the Helix but it will not support the momentary switch for tap tempo. I work on a quiet stage most of the time, the FS5U’s are so much quieter than those on the Helix. Can’t wait to try this!