I don't understand what OP means by 'balanced output' into a DAC. Also, why are you excluding streamers with good DACs? You can always bypass it if need be.
If the OP can loosen some of the requirements, Hifi Rose RS250 is a good option that has built-in wifi. There are a number of folks on audiogon who have purchased this streamer and are quite happy with the performance. However, it does have a built-in DAC.