I'm currently using the Arcam A65plus integrated, not sure if you're looking at the A65 or A65plus. This integrated is a very affordable unit to upgrade or to start out with. From what I've heard and also think, it is a fast amplifier, quite dynamic and "lively".
Meaning it is not melow or soft.
I find the latter is too relaxing for my taste. It's all preference. Some say it sounds too "digital".
It is only about 40watts, but it drives my Sonus Faber concertinos (6ohms) just fine. This of course means that it's equivalent to 60watts.
It's a very flexible integrated and will drive most speakers just fine.
Controls are very user friendly, possible biwiring, bi-amping.
Hope this helps.