@rothfusslg
I saw this thread pop up again and am always interested in Harbeth.
Last weekend I heard the Super HL5 Plus with the LM-805iA Integrated tube amplifier - Single Ended 805 - 2x48W - and think it better than the Luxman recommendation I made earlier (but have not done a formal or even an informal shootout). This integrated amp worked extremely well with the SHL5+ and never showed any signs of clipping and I was running the volume control. Was very good with an Aurender streamer and even better with a Luxman TT + Hana Cart and JC3+ phonopre. For reference, I've heard the SHL5+ many times, with Luxman integrateds and seperates, Marantz, Mark Levinson, and now the Line Magnetic. The Line Magnetic works amazingly well, especially for the 48 WPC it is noted to have. Seems like much more than 48 WPC.
Disclosure, I'm just a happy patron of Excel Audio and I have no financial interest. I just love listening to music on fine systems.