Hi.
What impedance range to expect from 'generic' cheap earbuds, the ones typically used with music players, telephones, laptops, portable radios...
See very little data on the web, and less being a chinese 'low-end' product.

 

I think the general impedance of earbuds is 16-32 ohms. Better consumer large headphones are around 50 ohms, high end ones I think 150-600 ohms.