Luxman vs Accuphase for Harbeth 40.3 XD

I'm considering trying a SS integrated to power my 40.3 XDs. I'll buy used.

I've heard great things about T+A but they are really pricey, and Luxman and Accuphase look interesting, there are 2 examples for sale currently.

Luxman L-509X $6,300 and Accuphase E650 $12K

I hear a lot about high damping factor being necessary to get the best out the the Harbeth's (Luxman is 370 and the Accuphase is 1000).

Honestly cannot justify $12K at the moment but I wondered if anyone has any thoughts on these 2 amps for my speakers? Or any other suggestions?

macg1908-20-2023 3:36pm

nsb Details Discussions Posts This discussion Message User 4 posts 04-18-2026 at 02:41pm Copy Comment URL Report Comment Edit Delete @stuartbmw3 I am considering buying 505Uxii. Can you please share the characteristics of it. I asked a couple of AIs, and they said the Uxii series is no longer warm and sweet. With the ODNF4.0, it has a very high slew rate that makes it a very sharp transient and weak in low-mid weight. Just worry that it cannot be a good pair with my ProAc DB1.
jjss49 Details Discussions Posts This discussion Message User 6,926 posts 04-18-2026 at 03:18pm Copy Comment URL Report Comment Edit Delete this is what is called the three speaker home theater effect on a-gon
nsb Details Discussions Posts This discussion Message User 4 posts 04-18-2026 at 04:32pm Copy Comment URL Report Comment Edit Delete @stuartbmw3 I am considering buying 505Uxii. Can you please share the characteristics of it. I asked a couple of AIs, and they said the Uxii series is no longer warm and sweet. With the ODNF4.0, it has a very high slew rate that makes it a very sharp transient and weak in low-mid weight. Just worry that it cannot be a good pair with my ProAc DB1.