I swear by these Philips: https://www.amazon.com/gp/product/B00ENMK1DW
Wired, not Bluetooth, but distractingly good sound, and half the $ of equivalent.
The good thing about this update is that you can take advantage of Dolby Atmos music with any pair of headphones/speakers so long as you have the setting turned to "Always On" instead of "Automatic."
As far as lossless/hi-res - generally speaking, the more you spend, the bigger difference you'll be able to hear (to an extent). That being said...
I have both of these and love them both for different reasons. I've spent more on pairs of headphones in the past and these two top them all:
Sennheiser HD599 - $200
Audio Technica ATH-M50x - $150
I don't have these but I've heard good things (some of which are farther on the cheaper side):
Philips SHP9500 - $60
AKG Pro Audio K72 - $40
Beyerdynamics DT 770 PRO - $150(ish)
Audio Technica ATH-M40x - $100
Other than that - you can google "best budget headphones" and there's a ton of lists. For audio stuff I'd stick to What Hi-Fi?, Crutchfield, Wired, and RTINGS as much as you can for the most reputable reviews. There are a bunch of Reddit threads discussing (read: arguing about) headphones, too. Happy listening!
I got mine from Amazon US several years ago. They are totally worth it at that price ($75USD); maybe you could use a VPN to buy them from the US?
I haven't had a chance to play the Stage 3, but I recently purchased a used Nord Piano 2. After a solid month of doing research trying to select the right digital piano upgrade, I went to a local shop with every intention of buying a Yamaha P515 but when I sat down an played it, the action felt clunky.
After trying a few other options in the price range, I went with the Nord. The action is perfect and it's amazingly simple to use, despite the buttons and knobs looking really complicated.
The ability to download sounds and completely customize everything is amazing once you start understanding it.
I mostly play using headphones (although some pretty pricy ones - Beyerdynamic DT 990 Premium Edition 250), and and think it sounds amazing. I'd suggest getting a nice pair of open-back headphones if you intend to practice a lot. Something like the Philips Audio SHP9500 (https://www.amazon.com/gp/product/B00ENMK1DW) are nice and reasonably priced.
https://www.amazon.com/Philips-SHP9500S-Precision-Over-ear-Headphones/dp/B00ENMK1DW/ref=mp_s_a_1_3?dchild=1&keywords=shp9500&qid=1608623122&sr=8-3 https://www.amazon.com/ZugGear-Transparent-Stabilizers-Mechanical-Satellite/dp/B07ZLXCWY9/ref=mp_s_a_1_1?dchild=1&keywords=durock&qid=1608623278&sr=8-1 These two things.
Phillips SHP9500s are on sale for 55 right now
It’ll make a difference for sure (* to an extent), just by the power amplifier itself. Maybe not as much since ofc— your gear prohibits most of the amps’ benefits.
IMO— the Zen’s DAC is tangible when u hear it. Gives the presentation a bit of warmth which I prefer over “clinical/noisy” DACs that come w the PC/Mac.. — the Burr Brown DAC is the only chipset I hear a difference with. Everything else, is all about how clean it sounds & how low the noise floor is. (I demo DACs for fun)
& you don’t have to dig deep to hear it’s benefits, I primarily use this amp w these;
(**They’re all entry level, but sounds a ton better than the usual AirPods etc.)
There’s a lot of value out there rn, don’t think you’re boxed in w what u have— the price of entry is lower than u think.. esp. if you’re coming fr Bose & SI Apple.
..I came frm AirPods Pros if that helps. :)