I have Mivv slip-ons on one 696 and Termis on the other 696. Neither had dB killers installed and while I loved the tone, I couldnít stand the volume, and had to wear earplugs.
I since added dB killers to the Mivvs and love love them now. I just ordered killers for the Termis too.
Personally, I like the tone of the Mivvs more, but I like that the carbon fiber Termis donít get hot. The Mivvs during engine braking when coming up to a stop light puts a smile on my face every time.