Its also possible to buy programmed Eproms
for the QV 20K, GT and QV Q2 at Ebay etc.
They vary in price and shipping costs.
To be able to use EFTP patches from Charlie Hall, the minimum is the QV plus 2.0
Sometimes its necessary to modify the board slightly in order to make the EFTP patches work properly. It depends on the boardversion. Charlie has documented that very well.
- Hardware upgrade Eprom Quadraverb Plus v2.03 Manual
- Improving noise performance of Quad, GT & plus
- Replacement battery GT - PDF