Can I plug my headphones into the headphone jack of the 4G iMod?
No! The 1/8″ stereo headphone ouput jack of the 4G iMod is converted to the modded “line-output.” The volume control is no longer in the signal path and the output voltage to too high and the sound will be too loud and not controllable. The modded line-out is designed to drive high impedance loads (e.g., > 5k) such as headphone amplifiers and home audio preamplifiers (which have a volume control). Headphones are low impedance (e.g., typically < 300 ohm) and not designed to be driven by a line-out signal. You MUST connect your 4G iMod to a headphone amplifier (or home audio preamplifier). Q: Can I use my 4G iMod with my docking station or sound dock from "brand X?" A: No – after the 4G iMod, the line-out signal from the dock connector of your 4G iPod is disabled. The modded line-out signal it fed to the 1/8″ stereo output jack (formerly the headphone output).