It should work but a quick look at a review says for transmitting it can only receive a signal from optical or coax to output LDAC, does your laptop sound card have optical out? If it's USB it says aptX LL would be available (also HD?). It has an upscaling feature but I don't if it can only be used feeding an amp. I suppose your wireless ones are the main intended use, otherwise you can output to your WM1A/Z and then use you MDR-Z1R which I found good very for movies.
https://headfonics.com/fiio-bta30-review/
Transmission
The BTA30 transmits with SBC/aptX/aptX LL(low latency)/aptX HD/LDAC codecs. This includes the low latency aptX codec so you can rely on it as a gaming decoder by choosing the codec as default in the controller app. LDAC is only supported for coaxial/optical input but not USB input.
You can also hook it up with a PlayStation, your TV, or the optical out on your PC motherboard. Imagine you want to watch some movies on your TV at night and you can’t turn up the volume or else the neighbors complain. This is when the BTA30 will be your rescue.
Simply connect to your PC/PlayStation via coaxial or optical then connect to your wireless earphones/headphones and you can get the full sound experience on your sofa. The BTA30 even supports low latency aptX (aptX LL) so you could game with it if you have headphones that support the codec