OP might want to consider Harbeth designer Alan Shaw's thoughts on the matter (from the Harbeth forum) before breaking the piggy bank : "You won't believe me - few take any notice of what I say here - but in the great scheme of things, in a world of great instability and anxiety, you just don't need to fret about this amp or that amp. You cannot - I repeat this - you, the layman, cannot begin to draw any objective, repeatable, valid opinions that are worth passing into folklore (and therefore moulding another person's behaviour) unless you devise a proper controlled comparison using an instantaneous A-B switchover. That is a fact. It cannot be refuted. If you were blindfolded and I walked into your listening room and very slightly adjusted the volume control I could reverse your opinions about amplifier X or Y. You must control the listening level between amps under test - or the comparison is in all honesty, meaningless. And that implies that you need specialist audio measuring equipment. As I've said ad nauseam, I work damned hard at the design stage to guarantee - yes guarantee - that my speakers will work well with any hifi amplifier that is operating within and to the original specification. I am not saying that amplifiers 'all sound the same' - quite the opposite. I'm saying that you can expect amplifiers to sound different under loose, uncontrolled 'comparisons' because they all have different gains. And different gains mean different loudness. And different loudness means different subjective characteristics. And they do have. But that is not necessarily to do with the amplifier (although it could be) - it is hugely the consequence of the way humans evaluate by listening and how loudness skews opinion. May I urge you to be mindful of how comments posted here, on the official Harbeth forum, have an unintended influence on others who are at this moment enjoying great music and who do not have the money or interest to chase the end of a rainbow. Many users have saved for years to buy a pair of Harbeth speakers. I've met them. They're not middle class professional people with money to burn - they're ordinary working people who chose to invest their hard-won savings in Harbeth speakers. And they're very contented music lovers. But I do find it objectionable that having climbed that financial mountain, another one is placed in front of them on the never-ending audio nervosa path. For crying out loud, let's enjoy whatever amplifier we have to hand and count our blessings that we're safe and healthy. I really don't want to read any more amplifier folklore here. I truly believe it just confuses users and would-be customers. It certainly confuses me. And I design the speakers! Relax - fear not. Whatever amp you've got will work just great with Harbeth."