Can be, and ARE as good is not the same thing. Devil is always in the implementation. I mean, I am open to the idea of a preamp with a great built-in phono
stage, like I am open to the idea of an integrated with a great built-in
DAC, but I'd be constantly worried about missing out.
Slightly off topic is the idea of the universal integrated amp. Not just one brand, but one piece of gear! :)
If some one said "Erik, get rid of all this crap, and get down to 1 piece of electronics" I might go with the Parasound Integrated. Their Zdac was quite good for the price, I would hope the Integrated kept that tradition alive.
PrimaLuna, AR , Cary, and Bryston also make very nice integrateds, mostly sans-DAC.