Thanks for clearing it up. I didnt quite know. I was really concerned after not being told and the owner not even being aware they had a LOD without caps. they always used it with a RSA amp and it was an ALO LOD. I asked and he said it had caps in it. I tested my gear thoroughly immediately to make sure no damage was done to it.
sorry kenman345, I have to correct several things in your post.
the caps dont change anything to AC, the AC is already there riding on top of a DC offset, the caps remove that DC, while presenting a High pass filter to the AC signal in combination with the amps input impedance.
if you have DC blocking caps for sure on the amp you are using, its BETTER to have no caps, adding an extra cap, no matter how good it is, isnt ever going to improve the sound quality over having no cap. but be aware at meets, advise people that there are no caps and remember yourself ie. dont use it with other peoples gear unless you know its AC coupled.
@ pcgo: I dont know what you think blocks DC in a USB connection, not only does it not involve any kind of DC blocking mechanism, but it is a completely different signal path that uses completely different pins in the dock.