My son and I built 2 sets of Senngrados with Beautiful wood cups built by 7keys. My sons are the Ebony set with the Sony ZX-310 headband and Canare Japan 405 cable with the S cush. Mine are the Walnut set with a cheap Wesc headband I picked up for $20 and Canare 405 wiring. at 7keys suggestion I used the foams from the Senheiser PX100II in front of the rear screens and also used dyna-mat on the rear of the drivers. I was using the L cush but found the upper notes were not very well defined so I threw on my G cushions and Wow! The sound really opened up and the highs came back to life. They have a nice solid bass. For some music I have to turn off my e12a bass boast as I fear my ear drums might vibrate out of my head Sorry the pictures are out of order. Look around for your PX100II drivers as they range from $27-$110. We lucked out and found 2 sets in the discount bin at Staples for $27 ea. So for around $150 a set my son and I have 2 very nice original headphones. Mine are super light and with the G cushions on they are so comfortable! I haven't tried mine with the S cushions yet but If its a huge difference I'll post it. Thanks again 7keys for all your help and the fantastic job you did on our cups.
* So I tried the "S" cushions on my Senngrado's and they also sound really good and are very comfortable. The "L" cushions rob them of the highs which is probably why I like them best on my Grado 325i's. So for Senngrado I would recommend the "G" or "S" Cushions.
Yep I also find G-cush pads to work best with my SG. Nice pics and builds!!