They do look like very good phones. I would like to try them. Beale, did you order the Sov mod kind for your X-Terra 70?
http://www.detectusa.com/technical.htm
Limiters.
For example on a Minelab, since the output voltage is lower, our limiter has no effect on the volume to the headphones. So there is no reason to turn off the limiter.
http://www.detectusa.com/reviews.htm
(Near the bottom of the page.)
X-Terra 30/50/70
[work great!] [Perfecto!] [Best I ever had] [Nice quality]
Sovereign GT, Sovereign Elite
[Look, sound, feel great] [Great] [Very comfortable, sound great]
Sovereign note: We have plenty of great reports with Minelab machines. Only the on the Sovereign is where we noticed less crispness. The user will hear more bass and perceive this as less bright. We have a cure called the Sov mod. See the Ratphones tab for more info.
X-Terra note: We have noticed on the X-terra that when listened to with wide range headphones, such as Koss or Ratphones, you can hear a slight hum in the background on the mid tones. This is the machine, not the headphones. You can buy narrow response headphones but then all your sounds will be poor, or select the Sov mod when you order. This will attenuate the circuitry noise.
I cannot find the Sov mod link on this web site?