Can I stream from a ProPlus via wifi, to a headphone dac or similar?

[Scimitar]

What do you consider an investment? There are products available under $100 or $150 US (many for much less) that utilize better codecs than AAC and SBC. APTX and LDAC are not solely the province of high end audio.

It's not only the headphone amplifier, if you have already a really good bluetooth headphone (like e. g. the Sennheiser Momentum 4 Wireless) in my experience you have to invest more to hear a difference. I use the Lehmannaudio Linear (around 750€) with a Cambridge Audio M100 DAC (around 250€) and a Sennheiser HD600 Headphone (bought via eBay around 250€) to beat my Sennheiser Momentum 4. So it seems to me you should first try for yourself to hear a difference between Bluetooth with AAC (not with SBC, of course!) and/or AptX HD.