• chaddavidkelly

more pics added

finally some shots that show off the extensive rework done to the original WA-87 when sent in for mod. Among many other things, we add a total of 6 precision polystyrene capacitors (precision so, the position that needs a 10pF will actually get a 10pF and not a 22pF like the generic original part measures. All of them are hand-wrapped, shielded, glued, for maximum resistance to noise, RFI, and vibration. This opens up the sound quite alot opposed to the film capacitors used mostly at the factory. One drawback of the WA-87 is that the 87ai's RF filter circuit is permanently engaged, and some do believe this inductor/capacitor network affects the sound negatively. But it does provide a service in filtering RFI from the line, so rather than take it out entirely we replace the WIMA caps in that circuit with really good mil-spec polystyrenes, therefore making it as open and sweetened as possible. It's a good compromise.

The mod really is quite extensive and takes a whole evening, there are also plenty of PRP thin film and NOS carbon composite resistors sprinkled in.

99 views0 comments

Recent Posts

See All

we have everything we need to complete all orders that have been placed or deposits put down, or pending, but will not be accepting new orders for a while. supply chain stuff, nothing to worry about,