Thanks, Clutz. For answering questions.
You can use these instructions for a 1.0.2 > 1.0.1 downgrade I found to a 1.1 > 1.0.3 downgrade.
Downgrading Apple iPod Classic Firmware (1.0.2 > 1.0.1). | Design | Reality | Photography
80GB Classic, Black. Updated last night to 1.1. Update went as usual, no odd behavior. My $.02.
I didn't notice any hissing so I've tried to replicate the hissing/crackling that others are describing, and I haven't had much luck..
I have two sets of headphones to tinker with here at my office, the standard iPod buds and my HD650's.
Direct from the headphone jack:
Dead silence from my HD650's, at all volume levels. As expected with their high impedance. With the iPod standard headphones, I can hear a slight pop when I plug/unplug them, but there's no hissing.
Using my ALO Bling Bling dock and PA2V2 amp:
With the HD650's I'm getting dead silence even when cranked to the max.
With the standard iPod headphones (I've never plugged them into the ALO+PA2V2 combo before), at normal to LOUD listening levels I'm not hearing any static. Too-loud-to-listen is at about 25% volume on the PA2V2. If I crank it to 100% volume, I can hear a faint hissing/crackling when paused. This volume level, however, would probably cause my brain to implode and would most certainly cause hearing damage were I to actually play music at this volume.