The sound you get out of the speakers is the result of all the components. Taking an old adage from the vinyl world… if it isn’t captured at the beginning of the chain, it is not coming out the other end. Also, if you don’t start with a quiet and none distorted signal… it isn’t going to get cleaned up on the way. So, a great streamer is an absolute requirement.
If you have an opportunity to get a great steamer at this price, you are going to get a great upgrade in sound. Your DAC is important as well. But you can wait a couple years and upgrade it, and you will get another great improvement in sound qua;it’s.
I would not split your budget between a streamer and DAC… you get two mediocre components. This streamer will put you in a whole new category of components, more in line with your amp.
My streamer is more expensive than my DAC and is very synergistic.