HH Scott 299B with Harbeth/low-efficiency speakers

Hi all,

I'm looking at buying a restored Scott 299B amp. My speakers are Harbeth compact 7s. Does anyone have experience with this or other Scott/Harbeth pairings? I've read that the vintage Scott amps are great with Klipsch and other efficient speakers, and worried that the 299B may not have the power to cleanly drive the Harbeths. Any thoughts appreciated!