Trani - I have not, but I believe there are others on this list that have. I do know that Eric told me that his speakers are all voiced the same, so to some extent they will all have that "Tekton" sound. Also, not sure what your budget is but the mini Ulf is smaller than the DI, yet higher end. However, be aware that they are not completed as of yet and they may take a while to get. Eric addressed in an earlier post what speakers are able to go out the door quickly. He is building and shipping speakers daily but the speaker you buy and finish you get makes a difference. Just go with whatever makes sense for you.