Have not tried Luxman L505u though I've read about the raw and forward presentation of it even when matched with the Harbeth. Listened to LFD MkIII and Leben CS600 with the Harbeth. The LFD and Leben appear to be a very good match to the Harbeth, though some Harbeth users prefer the Luxman over the LFD. I would have gone with the LFD if it had a remote and a not-so-minimalist design approach.
I would concur with Drdennis' assessment on both LFD and Leben CS300XS. The high frequency on the Leben is airier and more extended than the LFD if you compare both side by side. If one doesn't perform any comparison, the LFD is excellent in its own account.
I would concur with Drdennis' assessment on both LFD and Leben CS300XS. The high frequency on the Leben is airier and more extended than the LFD if you compare both side by side. If one doesn't perform any comparison, the LFD is excellent in its own account.