Which DAC makers let you do in home trial?

As @david_ten states, I agree there’s a lot to be gained by committing to a dac, but I also think that you learn a lot by comparing options side-by-side in your own system.

My approach was to order as many free-trial contenders as I could at the same time and then choose the winner. Sure, the dacs change over time, but you will also hear the basic differences in house sound at those early stages. If one’s in first place after 10 days of burning in, I highly doubt it could end up in last after 30. That comparison process will at the least give you solid "tiers" that are very unlikely to change no matter how long you spend with a particular dac.

Choose from the top tier and you’ll be happy, and will have learned enough not to be tempted by the new alternatives that pop up every month.

Benchmark has a 30 day trial

Check out the Denafrips Ares II R2R DAC. It is easily one of the best R2R DAC within your budget. You may be reluctant to order this from Singapore but chances of you not liking this DAC are slim to none.

You can count on Outstanding customer as long as you own this DAC.
https://www.vinshineaudio.com/product-page/denafrips-ares-r2r-dac

Vinshine audio doesn't offer in home trial period which kind of defeats the whole premise of the thread .

Here is another recommendation...Made in USA with 14 days home trial, 

http://borderpatrol.net/DAC.htm