It's interesting how you really have to find out the character of a speaker by it's reputation, hopefully a dealer is knowledgeable and on the level, some speakers 90dB or more, Paradigm comes to mind, may need a great deal of current while Harbeth is 86dB and is easily driven by a good 40 watt tube amp. I was surprised a certain dealer drove Harbeth fine with that 40 watt tube amp but switched to a Naim integrated when playing a Totem. I believe Totem is lower impedance than Harbeth's 8 ohms though.