Hegel h590 or Accuphase e460 with Harbeth 40.3

For instance Harbeth P3esrs is a totally different product, small cabinet and great sound and great dynamics for the size. Super HL5+ is again different to Harbeth 40, has super tweeter and is fantastic for rock music and blues very engaging but not for every type of music but not same driver than 40 so in this case a rounded and sweet amplifier can help. Harbeth 40 should be your final speakers if you follow what Harbeth ltd say but of course is not. There are weaknesses as well there but the Seac driver can play same level of old sonus faber of 25k and more, incredible how refined are in high. If you want the full orchestra with control, separations, attack and low end those are not the right speakers and no ampli does the miracle, for the other genre ok, blues jazz classic rock ok, new wave, post punk, modern rock, synth need grip and dynamic and a neutral powerful SS, no for disco music for sure, very good for vocal. If you want coloration on distortion on certain octave then add tube but only in pre amp.

@joey54

tom mallin’s post on wbf is not about his search for an amp for his 40’s... it is a difficult read, he is gigantically verbose and pretentious, but he only says he drives his 40’s in a NEARFIELD application (let’s not go there for how ridiculous that is) with benchmark ahb2’s... so what??

has minimal bearing on the op’s question...

Another thought for the OP you have a very solid integrated in the Rowland Concentra 2 already, maybe send it back to Rowland for a refresh? That might be a really cost effective way to improve your sound unless you're just ready to move on.