gofar99 Messages: 1940 Registered: May 2010 Location: Southern Arizona
Illuminati (5th Degree)
Hi Good points. There is a low noise, fast replacement for the NJM4558. Mouser part number 513-NJM2043L it is a direct replacement and a lot better it is $.74 each. I attached the data sheet. I may mod mine with some and see what happens. The caps though probably did the deal for improving the sound.