I used to have the same one as yours Cyber 20 but I sold it.
I'm not using a Cyber 20 (sold a while ago). I'm using a maxxed out Woo Audio WA6SE. Love it. I concur that the performance of the 701/702 has the potential to leap ahead with the right amp. It still wasn't the answer for my ears so I sold my 702. Plenty of folks love'em though...mine is only one opinion.