I have an SA-9 which has no out put jack.  I know one can simply add to R/w speaker wire.  I was wondering if anyone has tried soldiering in a jack that fits J2 on a MX-209 adding what ever needs to be at R1 &amp; R2(possibly cut the MX-209 jumper wire) and see what effect it has since this port is supposed to be for a MX-210 with processor MSM6387-01 or MSM6387-01B.  I was just wandering what the OKI M6387-03 would do.  I haven't found a 7-pin 1/8 jack to match yet.