this topic has been discussed here many years ago na....
http://www.pinoydvd.com/index.php/topic,38654.msg506571.html#msg506571for an amp that sells for 80 to 90K pesos, it must weigh in at least 20kilos, any thing less is a rip-off...
if you want to help Filipino Inventors, patronise the products of Anthony Audio...
or Mr. Aviso, who invented an electric car that can harvest rf energy from the surroundings...
professor Laguisma from St. Louie University Bagiuo, designed his own amp....
http://www.elab.ph/forum/index.php?topic=19214.0going back to amplifiers, there are a lot of Pinoys posting at Elab.ph, they are from Cebu and in Mindanao and to the North and in Baguio.....
still many of them are OFW's working in the middle east, and many of them are posting at diyaudio.com
these are young men and women into making amps for audio...
many of them can lay-out their own pcb designs and post them on the boards for all to download and for free...
and with china being a source of professional looking boards and cheap too,
it is now possible to make amps for all applications....
maraming mga talented young pinoys who can make those....