Hey Nolitan, I have heard both the LFD and the Luxman. The LFD was driving Harbeth speakers and sounded rich and detailed. I remember hearing the texture of the strings in an orchestral piece. I only listened to the LFD once, at a dealer's house, but that was my impression. What drove me to purchase the Luxman was the added features (you can see what I wanted in an amp at the top--I'm the one who initiated this thread). The LFD is pretty bare bones. Fortunately, I've found that the Luxman has a similar sound: rich, warm, yet detailed, but produces a bit more punch. I listen through Vandersteens, and the Luxman has shown me that when properly driven they can be fast and lively without losing their musicalty. Needless to say, I'm very happy with my L-505u