The PowerLine Extreme includes all the conditioning power of the PowerLine Ultra, but with the addition of DC blocking.
The unit has 4 fully conditioned sockets for source components and power supplies and one high current socket for integrated amplifiers or power amps.
Isol-8 have tested the Extreme on a number of systems, including Naim Audio equipment and in all cases found significant improvement in detail, depth and stability of the sound stage and reduction in background noise. At the same time there was no reduction in dynamics and musical timing.