gimmeheadroom
Headphoneus Supremus
HE-9 LE is probably, the best headamp money can buy and two classes up.
http://audio-gd.com/HE/HE9LE/HE9LEEN.htm
What's different between HE-9 LE and HE-9 MK2:
The HE-9 LE and HE-9 MK2 have share the exact same analog board. The most different is the HE-9 MK2 has built in regenerate power supply that can filter all power line
interrupt, feed the most clean power to the analog boards .
The HE-9 LE has built in the linear power supply , benefit from the built in pure class A PSUs that can offer the quite clean power to the analog boards.
If customer want the best sound quality, choice the HE-9 MK2.
http://www.audio-gd.com/HE/HE9MK2/HE9MK2EN.htm
If customer want to get the best rate of performance and price, or already own the good enough external power processor, choice the HE-9 LE .