Threshold S/150 II in beautiful cosmetic and sonic condition with original box and manual. 90 wpc into 8 ohms; manual does not indicate output into 4 ohms. No global feedback in design. Purchased from a friend, who was selling for the original owner. Amp has not been modified and is original. This is said to be one of the finest sounding of the original Stasis series. I've been using it to power a pair of original Eminent Technology LFT 8 speakers (see my other listings) with great results. Local pickup or delivery in or around Portland, Oregon preferred, but I will ship provided that buyer pays for packing materials, shipping and insurance.