Hi I'm trying to get a small extension speaker to use with the N82 when using WFA. I have seen the one with Trekker which works well as it is battery driven, is amplified and has its own volume. The only drawback is the price; it is £80 plus £7.50. There is one that works with the Braille note GPS series but I am not sure whether this is the same unit, or if not if it is amplified. I gather this has to be purchased from the US, costs $59 plus postage of anything from $75 to $100. I could of course use: headphones,earphones or a Bluetooth head set all of which would impair ones hearing to a lesser or greater extent. Does anyone know of a more reasonable product or if the Sendero Braille note speaker can be purchased in this country? Thanks Brian