barring the obvious power output of the supernait....I compared a newley capped Nait 1 with a bog standard Supernait and I found the Nait 1 more engaging at lower levels than the Supernait.....It did not bring a smile to my face in the same way as the older Nait 1....since the recap and service it sounds huge....that's the only way I can describe it.....any comments anyone' as I was not overly impressed with an uninvolving sound of the newer amp....???