Getting back to Hamming after about 20 years off...I used to run a small qrp rig for 40 meter CW and loved it- Now I'd like a small amp to add a little more power - I'm curious about these Chinese amps you see on Utube and for sale on Ebay/Amazon for only a few dollars.

Do they really work?? Are they worth it or pretty much junk??

Recommendations for a HF amp - maybe 25 Watts or so??

Thanks guys!!

(just wrote element 2 and 3 yesterday and am waiting for a new call sign - had to start over from the beginning as I had expired a few years back. I'd like to have a jump on the ability to transmit)