Over the last few months I've tried these speakers with 16wpc Single ended parallel 300B amps, a 50wpc pair of Class A solid state amps and a 75wpc integrated using KT120 tubes. Different flavors, all great, all can pin you to the back of your seat. They may not be able to do it like the DB-99 could with as little as 3 watts but man these speakers open up so many possibilities none the less.