Low Cost DACs


Currently I have my laptop connected directly via 1/8 jack from headphone outlet into 2 RCAs directly into my tube amp. Quality of sound is lacking to say the least!
I am considering adding an inexpensive DAC ( iFi AUDIO nano iDSD LE Portable DAC  or iFi Audio nano iOne DAC ) into the stream between the laptop & amp.My question is: will this influence the overall sound I'll hear out of my speakers? Will adding such a DAC help to increase the quality of sound produced by the system?
I'm not interested in spending a lot of money on a DAC as this is a source that I don't use as much as some others already in the system.
wcc10
ghulamr, Thanks for the post. Yes, sometime we complicate things more than necessary. Not sure why I hadn't thought of that!??! Guess I wanted to play with something new!As for cables; yes I've ordered a Tos Link cable to attach Schiit to back of OPPO. (Redundant?) Unfortunately I had sold my only Tos Link some time ago. I'm sure it will not enhance the quality of sound but then I'm experimenting, I guess. After morning coffee I'm going to try what you suggested and I'll let you know. Thanks.
AudioQuest Dragonfly. Good for laptops, mobile phone/tablets (ie, streaming Tidal on the go) or small systems. The new Cobalt gets a great review in the current issue of AbSound. Cobalt decodes MQA too. 
https://www.theabsolutesound.com/articles/audioquest-dragonfly-black-and-dragonfly-red-dacs/

wcc10 OP111 posts01-16-2020 4:00pm"So upon further review, swapping out RCA cables & perhaps the unit burned in a little, I have to say that yes this laptop does sound better with this DAC. Soundstage is 'wider' and a little deeper...."

Be patient. The Modi 3 will continue to improve in SQ with additional run-in time (100 hrs min.).
I’ve read owners reviews who compared the Modi 3 and Topping D50, and they preferred the Modi. The Topping stuff can be too sharp sounding, and not enough body or depth.

I’ve got the Modi and it does benefit from breaking in.  It’s a great sounding little dac, even playing my iPhone music on iTunes.