ElevenXIAudio Powerman


Designed for high resolution playback and ultimate bass control with the most demanding headphones.

Always on demo in the shop!


Optional external power supply upgrade
for the Formula S amplifer for extreme noise free power
and the higest resolution possible.

Upgrade the already excellent sound of your Eleven XI Audio Formula S Headphone Amplifier with the external high current power supply. Designed to sit below and mate with the Formula S, the Powerman easily connects with the supplied umbilical cable to replace the internal power source.

Very low noise discrete regulation and large toroidal transformer provides maximum headroom and subtle details from your Formula S amp.

Greater soundstage depth, increased subtle details and sense of space, and very black backgrounds combine to bring the music that much closer to reality.