I have just checked coupons. The lowest price I could get is $32.99 for AirAux AK380 Wireless Amplifier 800W (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
AirAux AK380 Wireless Amplifier 800W MAX Output 2.0 Channel Hi-Fi Class D bluetooth V5.0 Remote Control FM Antenna Integrated Mini Power Amplifier for Car Home Bar Party – EU Plug
Latest price update (UTC time):
Banggood ($32.99)
Banggood warehouse is located in China. Coupons for AirAux AK380 Wireless Amplifier 800W? Nope, there’re no coupons in Banggood. The question is – is it a good price? This price is higher than average price ($27.02) for this item.
Link: Banggood product page
Price: $32.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGAudio3, BG5b5d4a, BGAudio9
(there’s a little possibility that old coupon will work)
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
NEW AirAux AK380 Hifi Audio Home Digital Amplifiers Car Audio Bass Power bluetooth Amplifier FM USB SD Radio Subwoofer Speakers | $33.28 | – |
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for AirAux AK380 Wireless Amplifier 800W is here.
Price records source(s): 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)).