IMO the HE500 doesnt need speaker tap treatment. I tried it from taps and I noticed slightly cleaner bass vs. HP jack,but nothing dramatic. The downside of taps is you have very little wiggle room on the volume between silent and blasting,whereas from HP jack you have plenty of room for volume adjustment.Thank you. So you're using it with an HE-500. Which amp that you use to power it?
How about the volume level, do you have to use a very low volume?
HE6,Abyss,and perhaps a couple others,speaker taps is the only way to go. YMMV.