I thought I'd put my 2 cents in here. I lived with a somewhat lowly pair of Paradigm monitor 7's for 12 years before a bought a separate class H amp(2.2 kVA trans, +\- 20 amp/channel). I had no idea what they were capable of until then and it was the best $800, amp was used but mint condition, I'd ever spent. Even just bolted up to a midline Yamaha receiver as a pre I was now listening to a tight, controlled bottom end and more detail on the higher frequencies. I now have a big bad class A/B for my LFR's and although it doesn't double down it still delvers the juice: twin 1.5 kVA transformers +\- 30 amps /channel. It made a difference. I haven't heard M80's but with the right equipment I bet they rock.
