Cagey was going on a while back about them on AoS, so as they were a copy of an old incarnation of NVA I thought they could be useful for me in repairing old amps as I have to replace both boards for the new ones. If these work I only have to replace one. So I ordered a pair from China on eBay. Built them into an AP50 and switched on
![Confused :-?](./images/smilies/icon/confused.gif)
they sound as dull as ditchwater and within 5 minutes the two big lumps of alluminium I used to heatsink them were up to over 100deg C, definitely dangerous and illegal. I am just stripping them out of the amp to throw away then thought I would tell you lot and give a pic, so these are them half disassembled from the amp.
![Image](http://i60.tinypic.com/venlzs.jpg)