Originally Posted by Jap
No one is paying my inquiring mind any mind on the regular hp forum, so let me address this here. 
Can anyone comment on the quality differences between a stock Senn HD-25-1 I/II, a HD-25-1 with the APS portable cable or the APS V3 cable?
Obviously, I'm thinking of enhancing my HD-25-1 again. 
HeadphoneAddict had our V3 cable on his HD25's until he sold them off. He would be a good person to ask. We have sold very many HD25's, but since 98% of our orders is done through email I wouldn't be able to tell you who ordered to get some opinions.
Thanks,
Alex