so the dif. btwn the r44 and the 680, besides the extra channels, is the 680 has better stock preamps, but is much more finicky in regards to consistent field power and accepting a spdif digi-in..?
edit:
also, any concerns re: build quality..? i have a few taper buddies who swear off edirol products, though they just vaguely cite build quality as a reason...
thanks, in advance.