It would have enuf power but, IMHO, the sound of the amp might be too soft for the bottom end of the Spendor 100. I would love to hear the Spendor 100 with one of the PrimaLuna integrated amps. The Prologue One is amazing for the price. It has a very smooth/detailed midrange and reasonably tight and powerful bass - I have one and I am amazed at what you can buy for $1095. This unit has some very definite other plus' - its only real down side is that its bare bones - no remote, no tape loop, and you can't seperate the pre amp and amp sections.