Yes, I've heard 88db. In regard to tube amps however, one should first look at how friendly the impedance curve is. Knowing Danny designs, I'm sure it's fairly benign and tube friendly. With this in mind, we're back to the same old questions. How loud do you listen and how big is your room? If you already own the Decware's fine, but if you're ordering a new build, it supposedly takes months. If that is indeed the case, you might consider looking at other options. In regard to the NX Monitors, I plan on using a 22 watt 845 based SET in a fairly small room supplemented with 2 REL subs.