DAC Streamer Recommendation


A client of mine purchased a home in Colorado which included for free two mid 1970's Klipschorn K-Horns in perfect shape.  I am helping him assemble a system for the K-Horns.   I have purchased for him so far a Luxman L590aii amp and a VPI Prime Scout turntable with a Dynavector MC cartridge.  Although vinyl will be his prime source, he would also like to have the capability to stream hi-rez digital from Amazon. If the budget is $2000 for a streamer DAC, new or used, what should I look at?

I am a vinyl and SACD guy so I know nothing of this product.  Thanks for your help.
teeshot
The list of streamers that are compatible with Amazon HD are on their website and that is all there are for the near future.  Amazon seems to be in no hurry to release their API to other companies and all of them have asked.
You could use a Bluesound Node2i for streaming and send it through any DAC.  This is what I do in my 2nd system as I run the Node2i through a Benchmark DAC3.  This can be done for $2K and Amazon Music HD is supported by the BluOS app.  There are plenty of decent DACs in the $1500 new (less used of course).
I did not know that Amazon HD is a limiting factor. Ok let’s say Qobuz or Tidal are options.  His preference is for a one box solution if possible.