"I wasn't aware that you live in Bogota. Can you buy from Amazon there?"
the problem arises form the method i end up using
i can get a po box on usa and then redeliver the package from there to colombia and then to my house, this step seems to add a extra 24-48 hours
the problem is the cost of the redelivery step, also that if the amplifier decides not to work, i won't be able to send it to get a new one so i won't have a viable warranty over the unit, that is why i mention the price as one of the main factors to determine a possible purchase
last year i was going to get a amplifier practically identical to this onehttp://www.techman-usa.com/display.php?eC_type=DISPLAY&psid=AMP-150M&lang=en
but costs $90 here, so for a cheap home project is a big no no, a lepai and 20 sounds ideal if it comes with the power supply, so many things to consider, specially when you don't know what you are doing, as in my case