I am using the REL Q108E in this system: Von Schweikert VR-1, Creek 5350SE and Njoe Tjoeb 4000 CDP. I added it because These bookshelf speakers, as good as they are, don't go below about 50-60 Hz (in room response). The REL adds just enough bottom. This is a smaller room and I don't play it very loud (although my family might disagree!). It works very well to round out the bottom end and is a bargain for the price. Good luck and happy hunting!