DAC ESS9018 K2M chip, Native DSD256, ISO, DFF and DSF format, maximum support DSD256, Package Contents: 1x MP3 HiFi Music Player, 1x USB Cable, 1x 3.5mm Audio Cable, 2x Screen Protective Film, 1x English User Manual.
Go down and check coupons out. Remember to check price history if it is available. Let’s see what best price is ATM.
Aliexpress
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Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
1. ($247.29): 7d18f7
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): e2bcea, elec, 2019SPEDM, AFfbG10, BGBFAFF2019, BGCITYADS2019, BGE13, BMPlayers, BGVDay10%off, BGAFF10OFF, bGhOnEy10, Email5, BGSS10%SW, bgshOOp10, BGELIG0920, BG11SHOP, BG11PP12
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for XDUOO X20 Portable Bluetooth Music Player is here. The lowest price was: $199.98.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).