[quote name='deksawyer' post='519162' date='Jun 20 2009, 11:12 AM']One of the best amp ever made, regardless of price. I kind of miss mine!!
D.[/quote]
I'm still enjoying it Derek, as it happens...
As Spartacus has already said, it's tonally very flexible, with the semi-parametric e.q really handy for making very quick tonal adjustments as it allows you to cut/boost anywhere from 40hz to 10khz!
The enhance control allows you to dial in a very good 'scooped mids' tone which is instantly very pleasing to the ears, but IMO, takes too much away from the natural 'bite' in the sound that this amp has. The Edge control does provide a very useful valve simulation, which I like to use as it dirties up the sound of the amp, but in a good way.
Some of the other features are very handy too; the mute button, DI out with adjustable level, gain boost which is great if you have basses that have very diffferent output levels ( which mine do) and the footswitch comes in handy too. Another great feature is that it will run comfortably at 2 ohms and give you the full 650 watts, which is terrific for someone like me who has two 4ohm cabs.
The only crticism I have is that the NA 650 has a well-documented design flaw in that is not completely silent; it has a slight hum which can be quite annoying when using the amp at low volume levels.. I took it to my amp repairer and he tried to remedy it with some extra sheilding, but it didn't work at all!
Otherwise - a great amp!