So the OP wants a 5K streamer (no DAC or storage needed) to go along with his 5K integrated?
Good God, why not sell the Anthem for $3,500 on the used market and use the 5K you have budgeted for the streamer and buy an NAD Masters M33 V2 ($7,200) which will sound far better and have all that you want? And you save money.
A stripped down 5K streamer is, IMHO, a crime against the audiophile community.
Someone correct me if I am wrong. 1, 2, 3...