In the past I have owned both the MKI 2x12 and hd100 head and never experienced any issues with them.
I recently picked up (2nd hand.. I am a lowly retail manager struggling to meet bills, so new isnt always an option.) a MKII Hd100 and FBV MkII. I traded my dearly beloved 6505+ for this set up to better accomodate my bands needs. I am experiencing the 100ms cut out when switching between presets ( a to b, b to a, a to c.. and so on).I know this topic has been beaten to death, but I have to find a solution because the amp is useless for me at this point. I simply can not perform my bands songs in a live setting with this issue. After reading into it, it seems that that MKII users are the most affected by this. I have updated the firmware to 2.0, and then re-installed it as well. FBVII is up to date as well. What can I do? I took this amp as a trade, and i wont get the resale value of my 6505+ if i put it on craigslist. I want to keep it, ive got some incredible tones saved, but i simply can not use it with the delay between channel settings.