It is the extended-runtime version with a gain of 2 and a charging-function for the internal 9V rechargeable-battery. Excellent for portable headphones, but still with enough power to driver a DT880 with 600ohm. The poti pretzels a bit when the amp wasn't in use for some hours. Just turn the poti a few times from left to the right and it disappears. So it is nothing you should worry about.
Included is an AC-Adapter for 220V and the 9V battery.
Pics will follow.
100€ + shipment
Edited by NoXter - 9/21/10 at 8:38pm