Jolida JD9 Opamps
Slovell, I tried the 627s and found the 637s to be slightly more extended at both ends of the frequency spectrum, which was to my taste. Tonally they were very similar in my system. Johnnyb53, There are six opamps total in mine, although I've heard other versions of the JD9 may have a different arrangement. David |
I got mine as samples directly from TI, but here's one place to buy them at retail: http://parts.digikey.com/1/parts/464939-ic-opamp-gp-80mhz-sgl-hs-8-dip-opa637bp.html There are many others; just Google "OPA637BP". David |
There is a cheaper version of the 627/637 family you may wish to try. It is the 827. Very close to the 627/637 in specs, a bit better noise and a bit better distortion, and cheaper. It is only available as surface mount mount though, so you have to use a Brown Dog adapter or similar if you need an 8 pin DIP. BTW, its about $7.50 in singles. If you want to buy one pre-mounted, Brown Dog has the 827 for $22 mounted. The 627/637 DIP has gone up to between $25 and $35, depending on grade. |
