Recording from PC to R2R via DAC


Am in the process of re recording older R2R tapes from the early 70's. I subscribe to HD Amazon music and can get HD and UHD songs that I may transfer via my Zen Dac V2. I also have TunPat that I can use to convert these HD songs to any format I desire up to 32 with 728. I have decided to go with Flac as my conversion to stream through the Zen Dac through Shiit Loki Mini + that I can monitor sound quality to Marantz 2270. Will the Zen Dac V2 allow this type of high fidelity transference? Is Flac the best way to go or would some let's say 24 by 320 MP3 sound better? Would I really hear the difference? Finally am thinking of using a Waves emulator to get a better analog representation before re recording. Any thoughts about this?
sneakyal32

They say the difference besides size is processing power. Just keep a reasonable buffer and it’s almost impossible to hear the diff with most equipment.

flac is almost universally supported now daze.

Ripping analog is so time consuming that if you don't at least flac you will forever regret it.

I disagree. However I checked the net and found no definitive answers of it being a scam. I also however have used it successfully to convert Amazon music files to Flac files for my purposes. Maybe your experience was different. 

I'm sure the original R2R tapes would sound better because they are less stepped on. Amazon music is just plain bad. +1 Fuzz

To those who have responded and will respond with negative comments about my equipment  or streaming agent I don't care. That was not the question that I asked. So please restrict your "helpful" advice to the nature of my question involving the true intent of my quest. Otherwise please do not respond unless it truely helps me to complete my task.