[hollowstate]

Hi all:
I, too, have an ipod, but would rather hear my collection of vintage big bands... Anyway, many old signal generators make provision for external modulation, but whether the ipod would have enough oomph to bring it close to full modulation is another issue - might need a 12au7 amplifier, or even better a 6sn7 (schematic via google). Either way, I at first was concerned that the stereo outputs of the ipod might 'fight' each other if connected to a single point, but as long as the program is mono, that's not an issue - might still use a 2x8 ohm termination, though (at the price of ipods, I treat mine with kid gloves). Another advantage could be that if one did not previously own a sig gen for their bench, maybe this is good justification for it. Also, most of them have enough RF output to be heard at quite some distance.