Product name: Music Spectrum Clock Kit, Number of lamp beads: About 512, LED welding: All patch welding, Product type: 32×16 Dot Matrix Spectrum Clock, Product size: About 220*85MM*28MM, Welding difficulty: General, , Input voltage: DC5V, Lamp bead type: 0805 SMD LED.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Updated: 02-07-2025
Banggood
Warehouse in China.
Link: DIY LED Music Spectrum Clock Display Kit 16×32
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
Here is price history (for all/most countries) for DIY LED Music Spectrum Clock Display Kit 16×32. The lowest price was: $15.99.
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)).