About six months ago I scored a pair of KG 5.5, I’ve ran them straight off my integra DTR 7.8. Pretty impressive. I have a cabinet that needs some attention, I moved a pair of KG 1.5 from the bedroom and set up on the integra. Wow, they really like the extra power. Me being a concert level listener, I pulled an old 150 wpc amp out and am running the 1.5’s off it. These little bookshelf speakers have a really big sound. Without the amp they did an impressive job filling the space thouroughly. With the amp..... damn. Klipsch was extremely conservative rating these at 50w with a 200w peak. The KG 5.5’s will be mated to a Hafler DH 500 when the cabinets are freshened up. The best part of all this? My new lady friend didn’t flinch when she was introduced to my addiction. Most women I’ve met shy away from a dude with 30+ pair of speakers, even more pieces of audio gear. She got in there and started experimenting with different speakers attached to different gear. Hearing the nuances we all love to find. With the 1.5’s on the Integra, she heard the fullness of the sound. I think I found a keeper. The speakers aren’t going anywhere either.