I have two sets of 3 Ultra 5's & Ultra bases sitting in a box waiting for my S5's to reach 250hrs, but they would cost a lot to ship o/s for you to try due to their weight Imho dedicated amp stands are unnecessary. Even Stillpoints discontinued their amp stands 2 years ago after they realized their Ultra feet surpassed their platforms performance. If you still want a platform for appearance, or to lift the amp further off the ground i'd get a Taoc Sound Creation board & place the Stillpoints on top of that. Would kill an FE platform! They were recommended to me by Hans Vitus, and he was definitely right.