This tube amp looks interesting and you guys should be able to try it out in Germany:
No, I own the Earmax Pro which has output impedance of 85 ohms. It is a great little amp but a terrible match for the PFs. The Earmax SE output impedance should be lower but it is still no amp for IEMs. Earmax are OTL designs and thrive with Sennheiser and Beyer high ohm headphones.